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riboflavin Syllabification: ri·bo·fla·vin
Pronunciation: /ˌrībəˈflāvin/

Definition of riboflavin in English:


A yellow vitamin of the B complex that is essential for metabolic energy production. It is present in many foods, especially milk, liver, eggs, and green vegetables, and is also synthesized by the intestinal flora. Also called vitamin B2 (see vitamin B).
Example sentences
  • Vitamin B2, or riboflavin (in green vegetables, liver, wheat germ, eggs and cheese), alleviates eye fatigue by helping to regulate blood flow to the cornea.
  • Mushrooms also contain B-complex vitamins, such as riboflavin, niacin, folate and pantothenic acid, not easily found in produce.
  • Whole grains are also important sources of vitamins and minerals, such as thiamin, riboflavin, niacin, folate, selenium, zinc and iron.


1930s: from ribose + Latin flavus 'yellow' + -in1.

Definition of riboflavin in:
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