From Longman Dictionary of Contemporary Englishriboflavinri‧bo‧fla‧vin /ˌraɪbəʊˈfleɪvɪn $ ˌraɪbə-/ noun [uncountable] technical DFNvitamin B2, a substance that exists in meat, milk, and some vegetables, and that is important for your health
Examples from the Corpus
riboflavin• However, riboflavin is bright yellow, so the treated rice grains could clearly be seen in the final mix.• Early attempts to fortify rice included riboflavin along with the other constituents.• Chemically, the antimalarial drug Atebrin or mepacrine had some resemblance to riboflavin.• Half-a-pint of light ale provides about 7% of two B vitamins - riboflavin and nicotinic acid.Origin riboflavin (1900-2000) ribose type of sugar ((19-21 centuries)) (from arabinose type of sugar ((19-21 centuries)), from gum arabic type of natural substance) + Latin flavus “yellow” 