a nutrient that the body needs in small amounts to function and stay healthy. sources of vitamins are plant and animal food products and dietary supplements. some vitamins are made in the human body from food products. vitamins are either fat-soluble (can dissolve in fats and oils) or water-soluble (can dissolve in water). excess fat-soluble vitamins are stored in the body’s fatty tissue, but excess water-soluble vitamins are removed in the urine. examples are vitamin a, vitamin c, and vitamin e.
出典:Wiktionary
出典:『Wiktionary』 (2026/05/07 13:05 UTC 版)
First use appears c. 1920, originally vitamine (1912), from Latin vīta (“life”) (see vital) + amine (see amino acids). Vitamine coined by Polish biochemist Casimir Funk after the initial discovery of aberic acid (thiamine), when it was thought that all such nutrients would be amines. The term had become ubiquitous by the time it was discovered that vitamin C, among others, had no amine component. In 1920, British biochemist Jack Drummond proposed that the final -e be dropped to deemphasize the amine reference. The ending -in was acceptable because it was used for natural substances of undefined composition. Drummond also introduced the lettering system of nomenclature (Vitamin A, B, C, etc.) at this same time.
vitamin (third-person singular simple present vitamins, present participle vitamining, simple past and past participle vitamined)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/08 09:31 UTC 版)
A vitamin is an organic compound required as a nutrient in tiny amounts by an organism. In other words, an organic chemical compound (or related set of compounds) is called a vitamin when it cannot be synthesized in sufficient quantities by an organism, and must be obtained from the diet. Thus, the term is conditional both on the circumstances and on the particular organism. For example, ascorbic acid (vitamin C) is a vitamin for humans, but not for most other animals, and biotin and vitamin D are required in the human diet only in certain circumstances. By convention, the term vitamin does not include other essential nutrients such as dietary minerals, essential fatty acids, or essential amino acids (which are needed in larger amounts than vitamins), nor does it encompass the large number of other nutrients that promote health but are otherwise required less often. Thirteen vitamins are presently universally recognized.
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vitamin precursor
the vitamin content of…
a newly discovered vitamin
a vitamin called calciferol
I take vitamins.
a compound vitamin that has two or more kinds of vitamins
vitamin‐enriched rice
vitaminized processed foods
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