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Definition of riboflavin
riboflavin
/ˌraɪboʊˈfleɪvɪn/
ri · bo · fla · vin
Plural:riboflavins
riboflavin Lexical Profile
CEFR
C1
Grade
10
Tier
2
Usage
Rare
Syllables
4
riboflavin Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A water-soluble yellow vitamin of the B complex (vitamin B2) that is essential for cellular energy production and metabolic processes, found naturally in milk, eggs, liver, and leafy green vegetables.
Example
"A diet rich in dairy products and almonds provides an adequate daily intake of riboflavin."
Synonyms
View all synonyms for riboflavin• Rhymes for riboflavin
Word Origin & Etymology
Coined in the 1930s as a blend of ribose (the five-carbon sugar component of the molecule) and flavin (from the Latin 'flavus', meaning 'yellow', referring to the vitamin's bright yellow color).
Cite this Entry
Wordmom. (2026). Definition of Riboflavin. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/riboflavin