- vitamin A unit
- [USP] the specific biological activity of 0.3 mg of the all-trans isomer of retinol. See also international u. of vitamin A and retinol equivalent.
Medical dictionary. 2011.
vitamin A unit
Look at other dictionaries:
vitamin D unit — see international u. of vitamin D … Medical dictionary
Vitamin A — Systematic (IUPAC) name (2E,4E,6E,8E) 3,7 Dimethyl … Wikipedia
vitamin A — vitamin A1 vitamin A1 n. retinol ({C20H30O}), one of the substances also called {vitamin A}. It is also called more specifically {vitamin A alcohol}. It is a required factor for human nutrition. The USP unit of activity is equal to 0.30… … The Collaborative International Dictionary of English
vitamin A alcohol — vitamin A1 vitamin A1 n. retinol ({C20H30O}), one of the substances also called {vitamin A}. It is also called more specifically {vitamin A alcohol}. It is a required factor for human nutrition. The USP unit of activity is equal to 0.30… … The Collaborative International Dictionary of English
vitamin A1 — n. retinol ({C20H30O}), one of the substances also called {vitamin A}. It is also called more specifically {vitamin A alcohol}. It is a required factor for human nutrition. The USP unit of activity is equal to 0.30 micrograms of retinol. Syn:… … The Collaborative International Dictionary of English
unit — 1. One; a single person or thing. 2. A standard of measure, weight, or any other quality, by multiplications or fractions of which a scale or system is formed. 3. A group of persons or things considered as a whole because of mutual activities or… … Medical dictionary
vitamin — vitaminic, adj. /vuy teuh min/; Brit. also /vit euh min/, n. any of a group of organic substances essential in small quantities to normal metabolism, found in minute amounts in natural foodstuffs or sometimes produced synthetically: deficiencies… … Universalium
Vitamin poisoning — DiseaseDisorder infobox Name = hypervitaminosis Caption = ICD10 = ICD10|E|67|0|e|65 ICD10|E|67|3|e|65 ICD9 = ICD9|278.2, ICD9|278.4 ICDO = OMIM = DiseasesDB = MedlinePlus = eMedicineSubj = eMedicineTopic = Vitamin poisoning, or hypervitaminosis,… … Wikipedia
vitamin D — any of the several fat soluble, antirachitic vitamins D1, D2, D3, occurring in milk and fish liver oils, esp. cod and halibut, or obtained by irradiating provitamin D with ultraviolet light, essential for the formation of normal bones and teeth.… … Universalium
vitamin A — axerophthol axerophthol n. 1. a vitamin essential for normal vision ({C20H30O}); it prevents night blindness or inflammation or dryness of the eyes; same as {vitamin A}. One U.S.P. unit of vitamin A is equivalent to 0.30 micrograms of pure… … The Collaborative International Dictionary of English
