vitamin A2
vitamin A2 vitamin A2 n. dehydroretinol ({C20H28O}), one of the substances also called {vitamin A}. It has about 40% of the bioactivity of vitamin A1.

Syn: dehydroretinol. [WordNet 1.5 +PJC]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • vitamin A2 — ā tü n VITAMIN A (b) * * * dehydroretinol …   Medical dictionary

  • vitamin A2 — noun a viscous alcohol that is less active in mammals than is vitamin A1 • Syn: ↑dehydroretinol • Hypernyms: ↑vitamin A, ↑antiophthalmic factor, ↑axerophthol, ↑A * * * noun see vitamin A …   Useful english dictionary

  • vitamin A2 — /vaɪtəmən eɪ ˈtu/ (say vuytuhmuhn ay tooh) noun a vitamin found in the tissues of freshwater fish, with a function similar to that of vitamin A …   Australian English dictionary

  • vitamin A2 — a yellow oil, C20H28O, similar to vitamin A, obtained from fish liver. * * * …   Universalium

  • vitamin A — vitamin A2 vitamin A2 n. dehydroretinol ({C20H28O}), one of the substances also called {vitamin A}. It has about 40% of the bioactivity of vitamin A1. Syn: dehydroretinol. [WordNet 1.5 +PJC] …   The Collaborative International Dictionary of English

  • Vitamin A — is retinol. Carotene compounds (found, for example, in egg yolk, butter and cream) are gradually converted by the body to vitamin A (retinol). A form of vitamin A called retinal is responsible for transmitting light sensation in the retina of the …   Medical dictionary

  • vitamin A — n. a fat soluble aliphatic alcohol, C20H29OH, found in fish liver oil, egg yolk, butter, etc. or derived from carotene in carrots and other vegetables: a deficiency of this vitamin results in night blindness, a general susceptibility to… …   English World dictionary

  • vitamin A{}2{} — vitamin A2 n. A golden yellow oil, C20H28O, occurring chiefly in the livers of freshwater fish and having about 40 percent of the biological activity of vitamin A1. * * * …   Universalium

  • vitamin A — n. 1) biochem. nut a yellow, fat soluble terpene alcohol, C20H30O, obtained from carotene and occurring in green and yellow vegetables, egg yolk, etc.: essential to the protection of epithelial tissue and the prevention of night blindness Also… …   From formal English to slang

  • vitamin A — noun any of several fat soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes • Syn: ↑antiophthalmic factor, ↑axerophthol, ↑A • Hypernyms: ↑fat soluble vitamin • Hyponyms: ↑vitamin …   Useful english dictionary

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