vit ‧ a ‧ min /ˈvɪtəmən, ˈvɪtəmɪn, ˈvaɪ- $ ˈvaɪ-/ BrE AmE noun [countable]
[ Date: 1900-2000 ; Language: Latin ; Origin: vita ( ⇨ ↑ vital ) + English amine ( , ↑ amino acid ); because it was at first believed to contain an amino acid ]
1 . a chemical substance in food that is necessary for good health:
Try to eat foods that are rich in vitamins and minerals.
vitamin A/B/C etc (=a particular type of vitamin)
Lack of vitamin E can cause skin diseases and tiredness.
2 . ( also vitamin pill , vitamin supplement ) a ↑ pill containing vitamins:
Perhaps I ought to take vitamins.