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1 dye purple
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2 purple
purple ['pɜ:pəl]1 noun(b) (dye, cloth) pourpre f∎ the purple la pourpre∎ he turned or went purple (with rage) il est devenu cramoisi (de rage)►► Entomology purple emperor grand mars m (changeant);Ornithology purple gallinule poule f sultane;Military Purple Heart = médaille décernée aux blessés de guerre de l'armée américaine;familiar drugs slang purple heart pilule f d'amphétamine;American Ornithology purple heron héron m pourpre;Ornithology purple martin hirondelle f pourprée;∎ (period of success) he's been going through a purple patch recently: he's won five out of the last six tournaments he's entered il est dans une bonne période: il a gagné cinq des six tournois auxquels il a participé;Ornithology purple sandpiper bécasseau m maritime -
3 purple dye murex
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4 Purple
adj.——————subs.Purple dye: P. and V. πορφύρα, ἡ, P. ὄστρειον, τό.Purple cloak: Ar. φοινικίς, ἡ (also Xen.).Purple cloth: V. πορφύρα, ἡ.Strewn with purple cloth, adj.: V. πορφυρόστρωτος.Purple robe: Ar. ἀλουργίς, ἡ.Woodhouse English-Greek dictionary. A vocabulary of the Attic language > Purple
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5 Dye
Woodhouse English-Greek dictionary. A vocabulary of the Attic language > Dye
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6 PURPLE DYE
[N]PURPURA (-AE) (F)CONCHYLIUM (-I) (N)CONCHA (-AE) (F)AUSTRUM (-I) (N)CONCULIUM (-I) (N) -
7 Perkin, Sir William Henry
[br]b. 12 March 1838 London, Englandd. 14 July 1907 Sudbury, England[br]English chemist, discoverer of aniline dyes, the first synthetic dyestuffs.[br]He early showed an aptitude for chemistry and in 1853 entered the Royal College of Chemistry as a student under A.W.von Hofmann, the first Professor at the College. By the end of his first year, he had carried out his first piece of chemical research, on the action of cyanogen chloride on phenylamine, which he published in the Journal of the Chemical Society (1857). He became honorary assistant to von Hofmann in 1857; three years previously he had set up his own chemical laboratory at home, where he had discovered the first of the azo dyes, aminoazonapththalene. In 1856 Perkin began work on the synthesis of quinine by oxidizing a salt of allyl toluidine with potassium dichromate. Substituting aniline, he obtained a dark-coloured precipitate which proved to possess dyeing properties: Perkin had discovered the first aniline dye. Upon receiving favourable reports on the new material from manufacturers of dyestuffs, especially Pullars of Perth, Perkin resigned from the College and turned to the commercial exploitation of his discovery. This proved highly successful. From 1858, the dye was manufactured at his Greenford Green works as "Aniline Purple" or "Tyrian Purple". It was later to be referred to by the French as mauve. Perkin's discovery led to the development of the modern dyestuffs industry, supplanting dyes from the traditional vegetable sources. In 1869, he introduced two new methods for making the red dye alizarin, in place of the process that involved the use of the madder plant (Rubia tinctorum). In spite of German competition, he dominated the British market until the end of 1873. After eighteen years in chemical industry, Perkin retired and devoted himself entirely to the pure chemical research which he had been pursuing since the 1850s. He eventually contributed ninety papers to the Chemical Society and further papers to other bodies, including the Royal Society. For example, in 1867 he published his synthesis of unsaturated organic acids, known as "Perkin's synthesis". Other papers followed, on the structure of "Aniline Purple". In 1881 Perkin drew attention to the magnetic-rotatory power of some of the substances he had been dealing with. From then on, he devoted particular attention to the application of this phenomenon to the determination of chemical structure.Perkin won wide recognition for his discoveries and other contributions to chemistry.The half-centenary of his great discovery was celebrated in July 1906 and later that year he received a knighthood.[br]Principal Honours and DistinctionsKnighted 1906. FRS 1866. President, Chemical Society 1883–5. President, Society of Chemical Industry 1884–5. Royal Society Royal Medal 1879; Davy Medal 1889.Bibliography26 August 1856, British patent no. 1984 (Aniline Purple).1867, "The action of acetic anhydride upon the hydrides of salicyl, etc.", Journal of the Chemical Society 20:586 (the first description of Perkin's synthesis).Further ReadingS.M.Edelstein, 1961, biography in Great Chemists, ed. E.Farber, New York: Interscience, pp. 757–72 (a reliable, short account).R.Meldola, 1908, Journal of the Chemical Society 93:2,214–57 (the most detailed account).LRDBiographical history of technology > Perkin, Sir William Henry
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8 aniline
ani·line[ˈænɪli:n, AM -lɪn]\aniline dye Anilinfarbstoff m\aniline green Malachitgrün nt\aniline leather Anilinleder nt\aniline purple Mauvein nt* * *['nɪliːn]nAnilin nt* * *a) Anilinfarbstoff m,b) weitS. chemisch hergestellte Farbe -
9 colour
1 noun∎ what colour is it? de quelle couleur est-ce?;∎ what colour are his eyes? de quelle couleur sont ses yeux?;∎ a dark grey colour une couleur gris foncé;∎ it's a sort of greenish colour c'est d'une couleur un peu verdâtre;∎ the bleach took the colour out of it l'eau de Javel l'a décoloré;∎ the movie is in colour le film est en couleur ou couleurs;∎ he painted the room in bright/dark colours il a peint la pièce de couleurs vives/sombres;∎ the paint comes in a wide range of colours cette peinture est disponible dans un grand choix de couleurs ou se décline dans de nombreuses couleurs;∎ familiar we've yet to see the colour of his money nous n'avons pas encore vu la couleur de son argent∎ the political colour of a newspaper la couleur politique d'un journal;∎ under the colour of patriotism sous prétexte ou couleur de patriotisme∎ box of colours boîte f de couleurs(e) (complexion) teint m, couleur f (du visage);∎ her colour isn't good elle a mauvaise mine;∎ he changed colour il a changé de couleur ou de visage;∎ to lose one's colour pâlir, perdre ses couleurs;∎ to get one's colour back reprendre des couleurs;∎ she had a lot of colour in her cheeks ses joues avaient de belles couleurs;∎ to have a high colour avoir le visage rouge;∎ British to be off colour ne pas être dans son assiette;∎ figurative the joke was a bit off colour la plaisanterie était d'un goût douteux∎ to discriminate against sb on grounds of colour établir une discrimination à l'encontre de qn à cause de la couleur de sa peau;∎ colour isn't an issue ce n'est pas une question de couleur (de peau);∎ person of colour personne f de couleur(g) (interest) couleur f;∎ to add colour to a story colorer un récit;∎ a play full of colour une pièce haute en couleur(photography, picture, slide, magazine) en couleur, en couleurs(a) (give colour to → with chemical, dye) colorer; (→ with paint) peindre; (→ with crayons, felt-tips) colorier;∎ he coloured it blue il l'a colorié en bleu;∎ to colour one's hair se faire une couleur∎ to get or to win one's colours être sélectionné pour faire partie d'une équipe;∎ figurative to show one's true colours se montrer sous son vrai jour;∎ to see sb in his/her true colours voir qn sous son vrai jour(b) (of school) couleurs fpl∎ to serve with the colours servir sous les drapeaux;∎ to be called to the colours être appelé sous les drapeaux;∎ salute the colours! saluez le drapeau ou les couleurs!;∎ to sail under false colours naviguer sous un faux pavillon(d) (clothes for washing) couleurs fpl►► Photography colour balance équilibre m des couleurs;British colour bar discrimination f raciale;colour bearer porte-drapeau m;colour blindness daltonisme m;colour chart nuancier m;colour code code m coloré;Computing colour display affichage m couleur;Photography colour filter filtre m coloré;Computing colour graphics graphisme m en couleur;Photography colour graphics adapter adaptateur m graphique couleur, CGA m;colour line discrimination f ou ségrégation f raciale;∎ to cross the colour line faire fi de la ségrégation raciale;Computing colour monitor moniteur m couleur;Military colour party garde f du drapeau;colour photocopying photocopie f en couleurs;Typography & Photography colour positive positif m (en) couleur;Typography colour print reproduction f en couleurs;Typography colour printer imprimante f couleur;Typography colour printing impression f couleur;colour scheme palette f ou combinaison f de couleurs;∎ to choose a colour scheme assortir les couleurs ou les tons;Typography colour separation séparation f des couleurs, séparation f quadrichromique;British Military colour sergeant ≃ sergent-chef m (de la garde du drapeau);colour television télévision f couleur;colour television set téléviseur m couleur;colour therapy chromothérapie f;Art colour value valeur f chromatiquecolorier;∎ colour it in in blue colorie-le en bleu(blush) rougir -
10 bedstraw
- coast bedstraw
- corn bedstraw
- dye bedstraw
- fragrant bedstraw
- hairy bedstraw
- heath bedstraw
- hedge bedstraw
- lady's bedstraw
- marsh bedstraw
- northern bedstraw
- purple bedstraw
- rough bedstraw
- rough-fruited corn bedstraw
- small bedstraw
- southwestern bedstraw
- swamp bedstraw
- sweet-scented bedstraw
- white bedstraw
- wood bedstraw
- yellow bedstraw* * * -
11 fig
фикус ( Ficus); фиговое дерево, инжир ( Ficus carica)- cluster fig
- dye fig
- Florida strangler fig
- Indian fig
- India-rubber fig
- Moreton-Bay fig
- purple fig
- rusty fig
- sycamore fig* * *• инжир• фикус -
12 plant
------------------------------------------------------------[English Word] annual edible plant[Swahili Word] bisari[Part of Speech] noun------------------------------------------------------------[English Word] annual plant (Momordica morgose or charantia)[Swahili Word] karela[Part of Speech] noun[Derived Word] (Ind.)------------------------------------------------------------[English Word] be planted[Swahili Word] -pandwa[Part of Speech] verb[Class] passive[English Example] There were mango trees which were planted in profusion[Swahili Example] palikuwa na miembe iliyopandwa kwa fujo [Sul]------------------------------------------------------------[English Word] climbing plant[Swahili Word] mbugu[Swahili Plural] mibugu[Part of Speech] noun[Derived Word] mbungo N------------------------------------------------------------[English Word] climbing plant[Swahili Word] mkwezi[Swahili Plural] mikwezi[Part of Speech] noun[Derived Word] kwea V------------------------------------------------------------[English Word] climbing plant[Swahili Word] mmelea[Swahili Plural] mimelea[Part of Speech] noun[Derived Word] mea V------------------------------------------------------------[English Word] climbing plant[English Plural] climbing plants[Swahili Word] mtambaa miti[Swahili Plural] mitambaa miti[Part of Speech] noun[Class] 3/4[Related Words] mti------------------------------------------------------------[English Word] climbing plant (kind of)[Swahili Word] mkuku[Swahili Plural] mikuku[Part of Speech] noun------------------------------------------------------------[English Word] climbing plant yielding poison for arrows[English Plural] climbing plants[Swahili Word] kombe[Swahili Plural] makombe[Part of Speech] noun[Class] 5/6[Related Words] -komba[Terminology] botany / anthropology------------------------------------------------------------[English Word] Dichapetalum macrocarpum[Swahili Word] chikwaya jike[Part of Speech] noun[Terminology] botany------------------------------------------------------------[English Word] Dichapetalum mosambicense[Swahili Word] chikwaya dume[Part of Speech] noun[Terminology] botany------------------------------------------------------------[English Word] factory plant[Swahili Word] mtambo[Swahili Plural] mitambo[Part of Speech] noun------------------------------------------------------------[English Word] hardy creeping plant[English Plural] plants[Taxonomy] Callopsis Volensii[Swahili Word] kilalanungu[Swahili Plural] vilalaungu[Part of Speech] noun[Class] 7/8[Terminology] botany------------------------------------------------------------[English Word] hardy plant[English Plural] hardy plants[Taxonomy] Pentas purpurea[Swahili Word] kivumanyuki[Swahili Plural] vivumanyuki[Part of Speech] noun[Class] 7/8[English Definition] red and purple aromatic flowered shrub[Terminology] botany------------------------------------------------------------[English Word] hardy plant (Ramphicarpa veronicaefolia)[Swahili Word] kimangari[Swahili Plural] vimangari[Part of Speech] noun------------------------------------------------------------[English Word] jaja[Taxonomy] Aneilema aequinoctiale[Swahili Word] jaja[Swahili Plural] jaja[Part of Speech] noun[Class] 9/10[English Definition] perennial herb with small yellow, blue, mauve or lilac flowers[Swahili Definition] mmea mwenye maua madogo ya manjano, bluu au pinki[Terminology] botany------------------------------------------------------------[English Word] kakindu (variety of plant, Striga pubiflora)[Swahili Word] kakindu[Part of Speech] noun------------------------------------------------------------[English Word] kind of plant, Canna indica (the seeds are used for Moslem rosaries)[Swahili Word] mtasbihi[Swahili Plural] mitasbihi[Part of Speech] noun[Derived Word] tasbihi------------------------------------------------------------[English Word] kirukia (paratsitic climbing plant)[Swahili Word] kirukia[Swahili Plural] virukia[Part of Speech] noun[Derived Word] ruka V------------------------------------------------------------[English Word] lentil-plant[Swahili Word] mdengu[Swahili Plural] midengu[Part of Speech] noun[Derived Word] dengu N[Terminology] botany------------------------------------------------------------[English Word] marijuana plant (leaf is bangi)[Swahili Word] mbangi[Swahili Plural] mibangi[Part of Speech] noun[Class] 3/4------------------------------------------------------------[English Word] mkwakwa (climbing plant bearing edible fruit, Landolfia florida)[Swahili Word] mkwakwa[Swahili Plural] mikwakwa[Part of Speech] noun------------------------------------------------------------[English Word] mkwakwa (climbing plant bearing edible fruit, Landolfia florida)[Swahili Word] mkwakwara[Swahili Plural] mikwakwara[Part of Speech] noun------------------------------------------------------------[English Word] mlangamia (parasitic plant growing on cloves)[Swahili Word] mlangamia[Swahili Plural] milangamia[Part of Speech] noun------------------------------------------------------------[English Word] name of a climbing plant[Swahili Word] kirukia[Swahili Plural] virukia[Part of Speech] noun[Class] 7/8[Swahili Example] madirisha makubwa yenye virukia [Sul]------------------------------------------------------------[English Word] perennial plant (Abutilum zanzibaricum)[Swahili Word] mbiha[Swahili Plural] mibiha[Part of Speech] noun------------------------------------------------------------[English Word] perennial plant with yellow or blue flowers[Taxonomy] Aneilema aequinoctale, Aneilema sinicum[Swahili Word] kongwe[Swahili Plural] kongwe[Part of Speech] noun[Class] 9/10------------------------------------------------------------[English Word] plant[English Plural] plants[Swahili Word] kipando[Swahili Plural] vipando[Part of Speech] noun[Class] 7/8[Derived Language] Swahili[Derived Word] -panda[English Example] his little garden with a variety of plants[Swahili Example] kitalu chake kidogo chenye mchanganyiko wa vipando [Moh]------------------------------------------------------------[English Word] plant[English Plural] plants[Swahili Word] kiwanda[Swahili Plural] viwanda[Part of Speech] noun[Class] 7/8[English Example] heat-treatment plant; powdered-milk processing plant[Swahili Example] kiwanda cha jotojoto; kiwanda cha kufanyia unga wa maziwa [Rec]------------------------------------------------------------[English Word] plant[Swahili Word] mmea[Swahili Plural] mimea[Part of Speech] noun[Class] 3/4[Derived Word] mea V------------------------------------------------------------[English Word] plant[Swahili Word] -panda[Part of Speech] verb[Related Words] pandikizo, mpanda, mpando, upandaji------------------------------------------------------------[English Word] plant (any of several stinging kinds)[Swahili Word] weni[Swahili Plural] maweni[Part of Speech] noun[Class] 11/6[Swahili Example] weni 'uo ukiuke [Moh]------------------------------------------------------------[English Word] plant (kind of)[English Plural] plants[Taxonomy] Commelina imberbis; Commelina benghalensis[Swahili Word] jaja[Swahili Plural] jaja[Part of Speech] noun[Class] 9/10[English Definition] perennial herb with blue flowers[Swahili Definition] mmea mwenye maua ya bluu[Terminology] botany------------------------------------------------------------[English Word] plant (kind of)[Swahili Word] mnyapa[Swahili Plural] minyapa[Part of Speech] noun------------------------------------------------------------[English Word] plant (kind used for making black dye, Euclea multiflora)[Swahili Word] mdaa[Swahili Plural] midaa[Part of Speech] noun------------------------------------------------------------[English Word] plant (rice in holes)[Swahili Word] -sia[Part of Speech] verb------------------------------------------------------------[English Word] plant out[Swahili Word] -atika[Part of Speech] verb------------------------------------------------------------[English Word] plant out[Swahili Word] -pandikiza[Part of Speech] verb[Class] intensive[Derived Language] Swahili[Derived Word] -panda[Related Words] pandikizo[English Definition] transfer seedlings from a nursery to a plantation[Terminology] agriculture------------------------------------------------------------[English Word] plant resembling the pea (Phaseolus mungo)[Swahili Word] mchoroko[Swahili Plural] michoroko[Part of Speech] noun------------------------------------------------------------[English Word] plant that grows wild[English Plural] plants that grow wild[Swahili Word] kimelea[Swahili Plural] vimelea[Part of Speech] noun[Class] 7/8[Derived Language] Swahili[Derived Word] -mea------------------------------------------------------------[English Word] plant with aromatic leaves, (Ocimum sp)[Swahili Word] mvumbasi[Swahili Plural] mivumbasi[Part of Speech] noun------------------------------------------------------------[English Word] poisonous plant used for medicinal purposes[Swahili Word] msungululu[Swahili Plural] misungululu[Part of Speech] noun------------------------------------------------------------[English Word] thorny swamp plant[Swahili Word] tindiga[Part of Speech] noun------------------------------------------------------------[English Word] type of poisonous plant (Euphorbia abyssinica)[Swahili Word] mbamba[Swahili Plural] mibamba[Part of Speech] noun------------------------------------------------------------[English Word] wild plant (which has seeded itself)[Swahili Word] tarare[Part of Speech] noun------------------------------------------------------------[English Word] young plant[Swahili Word] chipukizi[Swahili Plural] machipukizi[Part of Speech] noun[Class] 5/6[Derived Word] chipua v------------------------------------------------------------ -
13 tint
1. nounFarbton, der2. transitive verbtönen; kolorieren [Zeichnung, Stich]* * *[tint] 1. noun(a variety, or shade, of a colour.) die Tönung2. verb(to colour slightly: She had her hair tinted red.) tönen* * *[tɪnt]I. nwarm \tint warme FarbeII. vtto \tint one's hair seine Haare tönen* * *[tɪnt]1. nTon m; (= product for hair) Tönung(smittel nt) f2. vthair tönen* * *tint [tınt]A s2. Farbton m, Tönung f:have a bluish tint einen Stich ins Blaue haben, ins Blaue spielen3. MAL Weißmischung f4. Gravierkunst: feine Schraffierung5. TYPO Tangierraster mB v/t (leicht) färben, tönen:she tinted her hair red sie tönte sich die Haare rot* * *1. nounFarbton, der2. transitive verbtönen; kolorieren [Zeichnung, Stich]* * *n.Farbe -n f.Farbton m. v.färben v.tönen v. -
14 Chilim Carpets
The best type of carpets made in Servia by the peasant women. The groundwork is usually brilliant red, with patterns woven in blue, purple, green, yellow and other colours. There is no pile and the surface is smooth and hard. Originally vegetable dyes made by the weavers were used, but the imported dyes now used have proved a detriment to the native dye industry. -
15 Liteau
In French mill parlance a narrow stripe along the selvedge of the cloth left undyed. After taking the cloth from the loom a narrow cord was sewn tightly along each selvedge, preventing the dye from penetrating the fabric and preserving the original colour. For scarlet, blue, and purple cloths the liteau was white, on green cloth it appeared yellow, and in violets a light red. The liteau served as a guide to the quality of the cloth. At the present time liteau means the blue and red weft stripes which are found on certain linen tablecloths. During the 14th century damask tablecloths were also made with such weft stripes. -
16 Colours
Not all English colour terms have a single exact equivalent in French: for instance, in some circumstances brown is marron, in others brun. If in doubt, look the word up in the dictionary.Colour termswhat colour is it?= c’est de quelle couleur? or (more formally) de quelle couleur est-il?it’s green= il est vert or elle est verteto paint sth green= peindre qch en vertto dye sth green= teindre qch en vertto wear green= porter du vertdressed in green= habillé de vertColour nouns are all masculine in French:I like green= j’aime le vertI prefer blue= je préfère le bleured suits her= le rouge lui va bienit’s a pretty yellow!= c’est un joli jaune!have you got it in white?= est-ce que vous l’avez en blanc?a pretty shade of blue= un joli ton de bleuit was a dreadful green= c’était un vert affreuxa range of greens= une gamme de vertsMost adjectives of colour agree with the noun they modify:a blue coat= un manteau bleua blue dress= une robe bleueblue clothes= des vêtements bleusSome that don’t agree are explained below.Words that are not true adjectivesSome words that translate English adjectives are really nouns in French, and so don’t show agreement:a brown shoe= une chaussure marronorange tablecloths= des nappes fpl orangehazel eyes= des yeux mpl noisetteOther French words like this include: cerise ( cherry-red), chocolat ( chocolate-brown) and émeraude ( emerald-green).Shades of colourExpressions like pale blue, dark green or light yellow are also invariable in French and show no agreement:a pale blue shirt= une chemise bleu pâledark green blankets= des couvertures fpl vert foncéa light yellow tie= une cravate jaune clairbright yellow socks= des chaussettes fpl jaune vifFrench can also use the colour nouns here: instead of une chemise bleu pâle you could say une chemise d’un bleu pâle ; and similarly des couvertures d’un vert foncé (etc). The nouns in French are normally used to translate English adjectives of this type ending in -er and -est:a darker blue= un bleu plus foncéthe dress was a darker blue= la robe était d’un bleu plus foncéSimilarly:a lighter blue= un bleu plus clair (etc.)In the following examples, blue stands for most basic colour terms:pale blue= bleu pâlelight blue= bleu clairbright blue= bleu vifdark blue= bleu foncédeep blue= bleu profondstrong blue= bleu soutenuOther types of compound in French are also invariable, and do not agree with their nouns:a navy-blue jacket= une veste bleu marineThese compounds include: bleu ciel ( sky-blue), vert pomme ( apple-green), bleu nuit ( midnight-blue), rouge sang ( blood-red) etc. However, all English compounds do not translate directly into French. If in doubt, check in the dictionary.French compounds consisting of two colour terms linked with a hyphen are also invariable:a blue-black material= une étoffe bleu-noira greenish-blue cup= une tasse bleu-verta greeny-yellow dress= une robe vert-jauneEnglish uses the ending -ish, or sometimes -y, to show that something is approximately a certain colour, e.g. a reddish hat or a greenish paint. The French equivalent is -âtre:blue-ish= bleuâtregreenish or greeny= verdâtregreyish= grisâtrereddish= rougeâtreyellowish or yellowy= jaunâtreetc.Other similar French words are rosâtre, noirâtre and blanchâtre. Note however that these words are often rather negative in French. It is better not to use them if you want to be complimentary about something. Use instead tirant sur le rouge/jaune etc.To describe a special colour, English can add -coloured to a noun such as raspberry (framboise) or flesh (chair). Note how this is said in French, where the two-word compound with couleur is invariable, and, unlike English, never has a hyphen:a chocolate-coloured skirt= une jupe couleur chocolatraspberry-coloured fabric= du tissu couleur framboiseflesh-coloured tights= un collant couleur chairColour verbsEnglish makes some colour verbs by adding -en (e.g. blacken). Similarly French has some verbs in -ir made from colour terms:to blacken= noircirto redden= rougirto whiten= blanchirThe other French colour terms that behave like this are: bleu (bleuir), jaune (jaunir), rose (rosir) and vert (verdir). It is always safe, however, to use devenir, thus:to turn purple= devenir violetDescribing peopleNote the use of the definite article in the following:to have black hair= avoir les cheveux noirsto have blue eyes= avoir les yeux bleusNote the use of à in the following:a girl with blue eyes= une jeune fille aux yeux bleusthe man with black hair= l’homme aux cheveux noirsNot all colours have direct equivalents in French. The following words are used for describing the colour of someone’s hair (note that les cheveux is plural in French):fair= blonddark= brunblonde or blond= blondbrown= châtain invred= rouxblack= noirgrey= griswhite= blancCheck other terms such as yellow, ginger, auburn, mousey etc. in the dictionary.Note these nouns in French:a fair-haired man= un blonda fair-haired woman= une blondea dark-haired man= un bruna dark-haired woman= une bruneThe following words are useful for describing the colour of someone’s eyes:blue= bleulight blue= bleu clair invlight brown= marron clair invbrown= marron invhazel= noisette invgreen= vertgrey= grisgreyish-green= gris-vert invdark= noir -
17 Hofmann, August Wilhelm von
SUBJECT AREA: Chemical technology[br]b. 8 April 1818 Giessen, Germanyd. 2 May 1892 Berlin, Germany[br]German organic chemist.[br]The son of an architect, Hofmann began studying law and languages but was increasingly drawn to chemistry, attracted by Liebig's teaching at Giessen. In 1841 Hofmann took his doctorate with a study of coal tar. He became Privatdozent at Bonn University in 1845, but later that year he was persuaded to take up the post of first Director of the Royal College of Chemistry in London, after tenure was guaranteed as a result of Prince Albert's influence. He remained there for twenty years until he was offered professorships in chemistry at Bonn and Berlin. He accepted the latter. Hofmann continued the method of teaching chemistry, based on laboratory instruction, developed by Liebig at Giessen, and extended it to England and Berlin. A steady stream of well-trained chemists issued forth from Hofmann's tuition, concerning themselves especially with experimental organic chemistry and the industrial applications of chemistry. In 1848 one of his students, C.B. Mansfield, devised the method of fractional distillation of coal tar, to separate pure benzene, xylene and toluene, thus laying the foundations of the coal-tar industry. In 1856 another student, W.H. Perkin, prepared the first synthetic dyestuff, aniline purple, heralding the great dyestuffs industry, in which several other of his students distinguished themselves. Although keenly interested in the chemistry of dyestuffs, Hofmann did not pursue their large-scale preparation, but he stressed the importance of scientific research for success on a commercial scale. Hofmann's stimulus in this direction flagged after his return to Germany, and this was a factor in the failure of British industry to follow up their initial advantage and allow it to pass to Germany. In 1862 Hofmann prepared a dye from a derivative of triphenylmethane, which he called rosaniline. From this he derived a series of beautiful colours, ranging from blue to violet, which he patented as "Hofmann's violets" the following year.[br]Principal Honours and DistinctionsEnnobled 1888.Further ReadingJ.Volhard and E.Fischer, 1902, August Wilhelm von Hofmann, ein Lebensbild, Berlin (the basic biography).K.M.Hammond, 1967, bibliography, unpublished, (Diploma in Librarianship, London University (lists 373 items; deposited in University College, London)).LRDBiographical history of technology > Hofmann, August Wilhelm von
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18 fig
fig фиговое дерево, инжир, Ficus caricaclimbing fig фикус карликовый, Ficus minimacluster fig фикус клубковатый, Ficus glomeratacreeping fig фикус карликовый стелющийся (Ficus minima var. pumila)dye fig фикус красилный, Ficus tinctoriaFlorida strangler fig фикус золотистый, Ficus aueraIndia-rubber fig фикус каучуконосный, Ficus elasticaIndian fig 1. фикус бенгальский, баньян, Ficus bengalensis ; 2. опунция обыкновенная, Opuntia vulgarisMoreton-Bay fig фикус крупнолистный, Ficus macrophyllapurple fig фикус шершавый, Ficus scabrarusty fig фикус ржавый, Ficus rubiginosasycamore fig сикамор античный, Ficus sycomorusEnglish-Russian dictionary of biology and biotechnology > fig
См. также в других словарях:
purple shell — noun or purple snail 1. a. : a gastropod mollusk that is a source of purple dye : purple 1c(1) b. : janthina 2 2 … Useful english dictionary
Purple — Pur ple, n.; pl. {Purples}. [OE. purpre, pourpre, OF. purpre, porpre, pourpre, F. pourpre, L. purpura purple fish, purple dye, fr. Gr. ? the purple fish, a shell from the purple dye was obtained, purple dye; cf. ? dark (said of the sea), purple,… … The Collaborative International Dictionary of English
Purple of Cassius — Purple Pur ple, n.; pl. {Purples}. [OE. purpre, pourpre, OF. purpre, porpre, pourpre, F. pourpre, L. purpura purple fish, purple dye, fr. Gr. ? the purple fish, a shell from the purple dye was obtained, purple dye; cf. ? dark (said of the sea),… … The Collaborative International Dictionary of English
Purple of mollusca — Purple Pur ple, n.; pl. {Purples}. [OE. purpre, pourpre, OF. purpre, porpre, pourpre, F. pourpre, L. purpura purple fish, purple dye, fr. Gr. ? the purple fish, a shell from the purple dye was obtained, purple dye; cf. ? dark (said of the sea),… … The Collaborative International Dictionary of English
purple — O.E. purpul, dissimilation (first recorded in Northumbrian, in Lindisfarne gospel) from purpure purple garment, purpuren purple, from L. purpura purple dyed cloak, purple dye, also shellfish from which purple was made, from Gk. porphyra (Cf. e… … Etymology dictionary
purple — ► NOUN 1) a colour intermediate between red and blue. 2) (also Tyrian purple) a crimson dye obtained from some molluscs, used for robes worn by an emperor or senior magistrate in ancient Rome or Byzantium. 3) (the purple) the scarlet official… … English terms dictionary
Purple drank — is a slang term for a recreational drug popular in the hip hop community of the southern United States. Its main ingredient is prescription strength cough syrup containing codeine and promethazine.cite journal | author = Peters Ronald J.… … Wikipedia
purple — [pʉr′pəl] n. [ME purpel < OE (Northumbrian) purpl( e), dissimilated var. of WS purpur( e) < L purpura, purple < Gr porphyra, shellfish yielding purple dye] 1. a dark color that is a blend of red and blue 2. Now Rare a) deep crimson b)… … English World dictionary
Purple — Pur ple, v. t. [imp. & p. p. {Purpled}; p. pr. & vb. n. {Purpling}.] To make purple; to dye of purple or deep red color; as, hands purpled with blood. [1913 Webster] When morn Purples the east. Milton. [1913 Webster] Reclining soft in blissful… … The Collaborative International Dictionary of English
Purple Rain Protest — Also: Purple Rain Revolt, and Purple Rain Riot On September 2, 1989, four days before South Africa s racially segregated parliament held its elections, Burg Street in Cape Town rained purple. A police water cannon with purple dye was turned on… … Wikipedia
dye — dyable, dyeable, adj. dyer, n. /duy/, n., v., dyed, dyeing. n. 1. a coloring material or matter. 2. a liquid containing coloring matter, for imparting a particular hue to cloth, paper, etc. 3. color or hue, esp. as produced by dyeing. 4. of the… … Universalium