extremely rare

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• rare — [ rer ] adjective *** 1. ) not happening very often: In a rare moment of honesty, he told her what he had done. it is rare (for someone) to do something: It s extremely rare for her to lose her temper. a ) not often seen or found, and therefore… …   Usage of the words and phrases in modern English

• rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

• rare — [[t]re͟ə(r)[/t]] ♦♦♦ rarer, rarest 1) ADJ GRADED Something that is rare is not common and is therefore interesting or valuable. ...the black necked crane, one of the rarest species in the world... She collects rare plants... Do you want to know… …   English dictionary

• rare */*/*/ — UK [reə(r)] / US [rer] adjective Word forms rare : adjective rare comparative rarer superlative rarest 1) a) not happening very often In a rare moment of honesty, he told her what he had done. it is rare (for someone) to do something: It s… …   English dictionary

• rare*/*/ — [reə] adj 1) not happening very often I am late only on rare occasions.[/ex] It s extremely rare for her to lose her temper.[/ex] 2) not often seen or found, and therefore valuable rare birds[/ex] He has a rare talent for managing people.[/ex] 3) …   Dictionary for writing and speaking English

• Rare-earth magnet — Rare earth magnets are strong, permanent magnets made from alloys of rare earth elements. Rare earth magnets are substantially stronger than ferrite or alnico magnets. The magnetic field typically produced by rare earth magnets can be in excess… …   Wikipedia

• Rare Book Room — is an educational website for the repository of digitally scanned rare books made freely available to the public.Starting around 1996 the California based company Octavo began scanning rare and important books from libraries around the world.… …   Wikipedia

• Rare Earth hypothesis — In planetary astronomy and astrobiology, the Rare Earth hypothesis argues that the emergence of complex multicellular life (metazoa) on Earth required an improbable combination of astrophysical and geological events and circumstances. The term… …   Wikipedia

• rare — adj. VERBS ▪ be, seem ▪ become, get ▪ remain ▪ be considered ▪ 19 species of the bird are consider …   Collocations dictionary

• extremely — adv. Extremely is used with these adjectives: ↑able, ↑abstract, ↑abusive, ↑accurate, ↑active, ↑adaptable, ↑addictive, ↑adept, ↑advanced, ↑advantageous, ↑afraid, ↑ …   Collocations dictionary

• rare earth magnet — noun Strong, permanent magnets that are made from alloys of rare earth elements, are much stronger than ferrite or alnico magnets, and are extremely brittle …   Wiktionary