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vitamin

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vi⋅ta⋅min

  [vahy-tuh-min; Brit. also vit-uh-min]
Use vitamin in a Sentence
–noun
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 of vitamins produce specific disorders.
Also, vi⋅ta⋅mine  [vahy-tuh-min, -meen; Brit. also vit-uh-min, -meen] .

Origin:
1912; earlier vitamine < L vīt(a) life + amine; coined by C. Funk, who thought they were amines

Related forms:
vi⋅ta⋅min⋅ic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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vi·ta·min   (vī'tə-mĭn)   
n.  Any of various fat-soluble or water-soluble organic substances essential in minute amounts for normal growth and activity of the body and obtained naturally from plant and animal foods.

[Alteration of vitamine : Latin vīta, life; see gwei- in Indo-European roots + amine (so called because they were originally thought to be amines).]
vi'ta·min'ic adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

vitamin 
1920, originally vitamine (1912) coined by Pol. biochemist Casimir Funk (1884-1967), from L. vita "life" (see vital) + amine, because they were thought to contain amino acids. The terminal -e formally was stripped off when scientists learned the true nature of the substance; -in was acceptable because it was used for neutral substances of undefined composition. The lettering system of nomenclature (Vitamin A, B, C, etc.) was introduced at the same time.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: vi·ta·min
Variant: also vi·ta·mine /'vIt-&-m&n, Brit also 'vit-/
Function: noun
: 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 ofmetabolic processes but do not provide energy or serve as building units, and are present in natural foodstuffs or are sometimes produced within the body
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

vitamin vi·ta·min (vī'tə-mĭn)
n.
Any of various fat-soluble or water-soluble organic substances essential in minute amounts for normal growth and activity of the body and obtained naturally from plant and animal foods.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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