English 'vitamin' was coined by Casimir Funk in 1912 as 'vitamine' (Latin 'vīta,' life + 'amine,' a nitrogen compound), based on his incorrect belief that all essential dietary factors were amines — the final '-e' was dropped in 1920 when the error was recognized, but the misleading root persists.
Definition
Any of a group of organic compounds essential in small quantities for normal metabolism, obtained naturally from plant and animal foods.
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Coined term (Latin + biochemistry)1912well-attested
Coined in 1912 by thePolish-American biochemist Casimir Funk (born Kazimierz Funk) as vitamine, a blend of Latin vīta (life) and amine (a class of nitrogen-containing organic compound). Latin vīta traces to PIE *gʷieh₃- (to live), the same root that underlies vivid, vivacious, viable, convivial, revive, and the Latin phrase for life itself. Funk isolated what he believed was an essential dietary amine preventing
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Theword 'vitamin' is based on a scientific error. Casimir Funk coined 'vitamine' because he thought all essential dietary factors were amines (nitrogen-containing compounds). They arenot. The final '-e' was silently dropped in 1920 to remove the false chemical claim, but the misleading 'amin-' portion remains — a permanent fossil of a biochemist's incorrect hypothesis
, leaving only the vital- root. The naming reflects the revolutionary insight that tiny dietary quantities of specific substances are essential to life — a concept that transformed medicine and nutrition science in the early 20th century. Key roots: *gʷeyh₃- (Proto-Indo-European: "to live"), amine (Modern chemistry (from ammonia, from Latin sal ammoniacus): "nitrogen-containing organic compound").