vitamin

14 ENTRIES FOUND:

vi·ta·min

noun \ˈvī-tə-mən, British usually ˈvi-\

: a natural substance that is usually found in foods and that helps your body to be healthy

: a pill containing vitamins

Full Definition of VITAMIN

:  any of various organic substances that are essential in minute quantities to the nutrition of most animals and some plants, act especially as coenzymes and precursors of coenzymes in the regulation of metabolic processes but do not provide energy or serve as building units, and are present in natural foodstuffs or sometimes produced within the body

Examples of VITAMIN

  1. This cereal contains essential vitamins and minerals.
  2. Did you remember to take your vitamin?

Origin of VITAMIN

alteration of vitamine, from Latin vita life + English amine
First Known Use: circa 1912

Other Biochemistry Terms

bile, biodegradable, capsaicin, keratin, metabolism

vi·ta·min

noun    (Medical Dictionary)

Medical Definition of VITAMIN

: any of various organic substances that are essential in minute quantities to the nutrition of most animals and some plants, act especially as coenzymes and precursors of coenzymes in the regulation of metabolic processes but do not provide energy or serve as building units, and are present in natural foodstuffs or are sometimes produced within the body

Variants of VITAMIN

vi·ta·min also vi·ta·mine \ˈvīt-ə-mən, British also ˈvit-\

vitamin

noun    (Concise Encyclopedia)

Organic compound required in small amounts in the diet to maintain normal metabolic functions. The term vitamine (1911) was changed to vitamin when it was realized that not all vitamins are amines (i.e., not all contain nitrogen). Many vitamins act as or are converted to coenzymes. They neither provide energy nor are incorporated into tissues. Water-soluble vitamins (vitamin B complex, vitamin C) are excreted quickly. Fat-soluble vitamins (vitamin A, vitamin D, vitamin E, and vitamin K) require bile salts for absorption and are stored in the body. The normal functions of many vitamins are known. Deficiency of specific vitamins can lead to diseases (including beriberi, neural tube defect, pernicious anemia, rickets, and scurvy). Excess amounts, especially of fat-soluble vitamins, can also be dangerous: e.g., too much vitamin A causes liver damage, an effect not seen with beta-carotene, which the body converts into vitamin A. Several vitamins are now known to support the immune system. Most vitamins are adequately supplied by a balanced diet, but people with higher requirements may need supplements.

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