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eikosi

  • 1 icosaèdre

    m. (lat. icosahedrum, du gr. eikosaedron, de eikosi "vingt") геом. двадесетостенен.

    Dictionnaire français-bulgare > icosaèdre

  • 2 icosagone

    m. (mot gr., de eikosi "vingt") геом. двадесетоъгълник.

    Dictionnaire français-bulgare > icosagone

  • 3 эйкозаноиды

    [греч. eikosiдвадцать и eidos — вид]
    группа химических веществ, содержащих в молекулярном каркасе 20 атомов углерода. Э. образуются в организме при метаболизме арахидоновой, эйкосапентаноидной и некоторых других кислот. Окисленные Э. разделяют на две группы: а) простагландины и тромбоксаны (циклические жирные кислоты, которые действуют как гормоны) и б) гидрокси- и гидроксижирные кислоты, а также лейкотриены, простациклины и др. соединения. Эти нерастворимые в воде и нестабильные соединения оказывают свое действие на клетки, находящиеся вблизи их места синтеза. Э. участвуют в контроле функционирования в организме гормональной, нервной и иммунной систем. Первый Э. (простагландин) был обнаружен в 1936 г. У. фон Эйлером.

    Толковый биотехнологический словарь. Русско-английский. > эйкозаноиды

  • 4 G

    G, g, indecl. n. or (on account of littera) f., had originally no place in the Latin alphabet: both the sharp and the flat guttural mutes, our k and g sounds, being represented by C; hence on the Columna Rostrata LECIONES, MACISTRATOS, EXFOCIONT, (pu)CNANDOD, PVCN(ad), CARTACINIENSIS, for legiones, etc.; hence, too, the archaic form ACETARE for agitare (v. Paul. ex Fest. p. 23 Müll. N. cr.), and the still common abbreviation of the names Gaius and Gneus in C and Cn.—At a later period (acc. to Plut. Qu. Rom. p. 277 D and 278 E, by means of a freedman of Spurius Carvilius Ruga, about the beginning of the second Punic war) a slight graphic alteration was made in the C, which introduced into the Roman orthography the letter G (on the old monuments C); thus we have in the S. C. de Bacchanal.: MAGISTER, MAGISTRATVM, FIGIER, GNOSCIER, AGRO; on the other hand, the orthography GNAIVOD PATRE PROGNATVS on the first Epitaph of the Scipios, which dates before that time, indicates either incorrectness in the copying or a later erection of the monument. When Greek words are written in Latin letters and vice versa, G always corresponds to G. Its sound was always hard, like Engl. g in gate, at least until the sixth century A. D.As an initial, g, in pure Latin words, enters into consonantal combination only with l and r; and therefore in words which, from their etymology, had the combination gn, the g was rejected in the classical period, and thus arose the class. forms nascor, natus, nosco, novi, notus, narus, navus, from the original gnascor, gnatus, gnosco, etc. (cf. the English gnaw, gnat, gnarr, etc., where the g has become silent); whereas in compounds the g again is often retained: cognatus, cognosco, ignarus, ignavus.—An initial g is dropped in lac (kindred to GALACT, gala), likewise in anser (kindred to Germ. Gans; Sanscr. hansa; Greek chên).As a medial, g combines with l, m, n, r, although it is sometimes elided before m in the course of formation; so in examen for exagmen from agmen; in contamino for contagmino (from con-TAG, tango). Before s the soft sound of g passes into the hard sound of c, and becomes blended with the s into x (v. the letter X); though sometimes the g (or c) is elided altogether, as in mulsi from mulgeo, indulsi from indulgeo; cf.: sparsus, mersus, tersus, etc. So too before t, as indultum from indulgeo. The medial g is often dropped between two vowels, and compensated for by lengthening the preced. vowel: māior from măgior, pulēium from pulēgium, āio from ăgio (root AG, Sanscr. ah, to say; cf. nego). Likewise the medial g is dropped in lēvis for legvis, Sanscr. laghn, fava for fagva, fruor for frugvor, flamma for flagma, stimulus for stigmulus, examen for exagmen; jumentum, from root jug-: sumen from sug-; cf.: umor, flamen, etc.As a final, g was only paragogic, acc. to Quint. 1, 7, 13, in the obsolete VESPERVG (for vesperu, analogous with noctu; v. Spald. ad loc.). Etymologically, g corresponds to an original Indo - European g or gh, or is weakened from c, k. Thus it stands where in Greek we have:
    (α).
    g, as ago, agô; ager, agros; argentum, arguros; genus, genos; fulgeo, phlegô, and so very commonly;
    (β).
    ch (usually before r, or in the middle of a word): ango, anchô; rigo, brechô; gratus, chairô, etc.;
    (γ).
    k: viginti, eikosi; gubernator, kubernêtês; gummi, kommi, etc.—By assimilation, g was produced from b and d in oggero, suggero, aggero, etc., from obgero, sub-gero, ad-gero, etc.As an abbreviation, G denotes Galliarum, Gallica, gemina, Germania, genius, etc.; and sometimes Gaius (instead of the usual C); v. Inscr. Orell. 467; 1660; 4680:

    G.P.R.F. genio populi Romani feliciter,

    Inscr. Orell. 4957; v. Corss. Ausspr. 1, 76 sqq.; Roby, Lat. Gr. 1, 38 sqq.

    Lewis & Short latin dictionary > G

  • 5 g

    G, g, indecl. n. or (on account of littera) f., had originally no place in the Latin alphabet: both the sharp and the flat guttural mutes, our k and g sounds, being represented by C; hence on the Columna Rostrata LECIONES, MACISTRATOS, EXFOCIONT, (pu)CNANDOD, PVCN(ad), CARTACINIENSIS, for legiones, etc.; hence, too, the archaic form ACETARE for agitare (v. Paul. ex Fest. p. 23 Müll. N. cr.), and the still common abbreviation of the names Gaius and Gneus in C and Cn.—At a later period (acc. to Plut. Qu. Rom. p. 277 D and 278 E, by means of a freedman of Spurius Carvilius Ruga, about the beginning of the second Punic war) a slight graphic alteration was made in the C, which introduced into the Roman orthography the letter G (on the old monuments C); thus we have in the S. C. de Bacchanal.: MAGISTER, MAGISTRATVM, FIGIER, GNOSCIER, AGRO; on the other hand, the orthography GNAIVOD PATRE PROGNATVS on the first Epitaph of the Scipios, which dates before that time, indicates either incorrectness in the copying or a later erection of the monument. When Greek words are written in Latin letters and vice versa, G always corresponds to G. Its sound was always hard, like Engl. g in gate, at least until the sixth century A. D.As an initial, g, in pure Latin words, enters into consonantal combination only with l and r; and therefore in words which, from their etymology, had the combination gn, the g was rejected in the classical period, and thus arose the class. forms nascor, natus, nosco, novi, notus, narus, navus, from the original gnascor, gnatus, gnosco, etc. (cf. the English gnaw, gnat, gnarr, etc., where the g has become silent); whereas in compounds the g again is often retained: cognatus, cognosco, ignarus, ignavus.—An initial g is dropped in lac (kindred to GALACT, gala), likewise in anser (kindred to Germ. Gans; Sanscr. hansa; Greek chên).As a medial, g combines with l, m, n, r, although it is sometimes elided before m in the course of formation; so in examen for exagmen from agmen; in contamino for contagmino (from con-TAG, tango). Before s the soft sound of g passes into the hard sound of c, and becomes blended with the s into x (v. the letter X); though sometimes the g (or c) is elided altogether, as in mulsi from mulgeo, indulsi from indulgeo; cf.: sparsus, mersus, tersus, etc. So too before t, as indultum from indulgeo. The medial g is often dropped between two vowels, and compensated for by lengthening the preced. vowel: māior from măgior, pulēium from pulēgium, āio from ăgio (root AG, Sanscr. ah, to say; cf. nego). Likewise the medial g is dropped in lēvis for legvis, Sanscr. laghn, fava for fagva, fruor for frugvor, flamma for flagma, stimulus for stigmulus, examen for exagmen; jumentum, from root jug-: sumen from sug-; cf.: umor, flamen, etc.As a final, g was only paragogic, acc. to Quint. 1, 7, 13, in the obsolete VESPERVG (for vesperu, analogous with noctu; v. Spald. ad loc.). Etymologically, g corresponds to an original Indo - European g or gh, or is weakened from c, k. Thus it stands where in Greek we have:
    (α).
    g, as ago, agô; ager, agros; argentum, arguros; genus, genos; fulgeo, phlegô, and so very commonly;
    (β).
    ch (usually before r, or in the middle of a word): ango, anchô; rigo, brechô; gratus, chairô, etc.;
    (γ).
    k: viginti, eikosi; gubernator, kubernêtês; gummi, kommi, etc.—By assimilation, g was produced from b and d in oggero, suggero, aggero, etc., from obgero, sub-gero, ad-gero, etc.As an abbreviation, G denotes Galliarum, Gallica, gemina, Germania, genius, etc.; and sometimes Gaius (instead of the usual C); v. Inscr. Orell. 467; 1660; 4680:

    G.P.R.F. genio populi Romani feliciter,

    Inscr. Orell. 4957; v. Corss. Ausspr. 1, 76 sqq.; Roby, Lat. Gr. 1, 38 sqq.

    Lewis & Short latin dictionary > g

  • 6 viginti

    vīginti (or XX.), num. adj. [Sanscr. vicati; Gr. eikosi; Boeot. Wikati], twenty:

    viginti jam usu'st filio argenti minis,

    Plaut. As. 1, 1, 76:

    si viginti quiessem dies,

    Cic. Planc. 37, 90; id. Univ. 7:

    annos natus unum et viginti,

    id. de Or. 3, 20, 74; Liv. 2, 21, 7:

    blattae impositae diebus viginti uno,

    Plin. 29, 6, 39, § 141; cf. id. 30, 10, 27, § 92:

    cui (Mithridati) duas et viginti linguas traditur notas fuisse,

    Quint. 11, 2, 50:

    quattuor hinc rapimur viginti et milia raedis,

    Hor. S. 1, 5, 86 et saep.

    Lewis & Short latin dictionary > viginti

См. также в других словарях:

  • ИКОСАЭДР — (греч., от eikosi двадцать, и hedra основание). Двадцатигранник. Словарь иностранных слов, вошедших в состав русского языка. Чудинов А.Н., 1910. ИКОСАЭДР греч. eikosaedros, от eikosi, двадцать, и hedra, основание. Двадцатигранник. Объя …   Словарь иностранных слов русского языка

  • Ikosaeder — Iko|sa|eder 〈n. 13; Geom.〉 von 20 Flächen begrenzter Körper; Sy Zwanzigflach, Zwanzigflächner [<grch. eikosi „zwanzig“ + hedra „Sitzfläche“] * * * I|ko|sa|e|der [↑ Icosa (2) u. ↑ eder], das; s, : von 20 Dreiecksflächen begrenztes Polyeder, bei …   Universal-Lexikon

  • O! Kypros — Studio album by Anna Vissi Released July 24, 1995 Label …   Wikipedia

  • Doric Greek — Distribution of Greek dialects in the classical period.[1] Western group …   Wikipedia

  • Dorien — Cet article concerne un ancien dialecte grec. Pour le peuple grec du même nom, voir Doriens. Distribution des dialectes du grec ancien durant la période cla …   Wikipédia en Français

  • икосаэдр — (от греч. éikosi  двадцать и hédra  грань), один из пяти типов правильных многогранников; имеет 20 граней (треугольных), 30 рёбер, 12 вершин (в каждой сходится 5 рёбер). * * * ИКОСАЭДР ИКОСАЭДР (от греч. eikosi двадцать и hedra грань), один из… …   Энциклопедический словарь

  • icosi- — [ī′kō sē, ī′kōsə] 〚Gr eikosi < eikosi, twenty < IE * wikmti, twenty < wi , two + * dl̑eṃt < base * dek̑ṃ, TEN〛 combining form twenty: also icosa [ī′kōsə] or, before a vowel, icos * * * …   Universalium

  • icosahedron — icosahedral, adj. /uy koh seuh hee dreuhn, uy kos euh /, n., pl. icosahedrons, icosahedra / dreuh/. a solid figure having 20 faces. [1560 70; < Gk eikosáedron, equiv. to eikosa (var. of eikosi , comb. form of eíkosi twenty) + edron HEDRON] * * * …   Universalium

  • icositetrahedron — /uy koh si te treuh hee dreuhn, uy kos euh /, n., pl. icositetrahedrons, icositetrahedra / dreuh/. a solid figure having 24 faces. [1825 35; < Gk eikosi (comb. form of eíkosi twenty) + TETRAHEDRON] * * * …   Universalium

  • icosahedral — Having 20 equilateral triangular surfaces and 12 vertices, as do most viruses with cubic symmetry. [G. eikosi, twenty, + edros, having sides or bases] * * * ico·sa·he·dral (i″ko sə heґdrəl) [Gr. eikosi twenty + hedra seat]… …   Medical dictionary

  • icosa- — ► prefijo Componente de palabra procedente del gr. eikosi, que significa veinte: ■ icosaedro. TAMBIÉN icosi * * * alticosa , icosi /alt ► Prefijos procedentes del gr. eíkosi, veinte …   Enciclopedia Universal

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