riboflavin

noun

ri·​bo·​fla·​vin ˌrī-bə-ˈflā-vən 

ˈrī-bə-ˌflā-

: a yellow crystalline compound C₁₇H₂₀N₄O₆ of the vitamin B complex that occurs both free (as in milk) and combined (as in liver) as a component of coenzymes (such as FMN) which are essential to normal metabolism

called also vitamin B₂

Examples of riboflavin in a Sentence

Recent Examples on the Web

Plus, nutritional yeast is a vegan source of vitamin B12 and other B vitamins such as vitamin B6, riboflavin, niacin, and folate.28 19. —Jamie Johnson, Verywell Health, 6 Feb. 2025

There are a series of vitamins found in eggs, including vitamins A, B12, D, E, biotin, riboflavin and thiamine. —Olivia Munson, USA TODAY, 30 Jan. 2025

These include calcium, vitamins D (when fortified) and B12, niacin, phosphorus, riboflavin, pantothenic acid. —Maxine Lipner, Verywell Health, 10 Jan. 2025

Maple syrup has a higher concentration of nutrients such as potassium, calcium, riboflavin, and zinc. —Lauren O'Connor, Ms, Health, 6 Jan. 2025

Word History

Etymology

International Scientific Vocabulary ribo- + Latin flavus yellow — more at blue

First Known Use

1935, in the meaning defined above

Rhymes for riboflavin

• craven
• flavin
• graven
• haven
• maven
• pavan
• raven
• shaven
• engraven
• unshaven

Kids Definition

riboflavin

noun

ri·​bo·​fla·​vin ˌrī-bə-ˈflā-vən 

: a vitamin of the vitamin B complex that helps growth and is found both free (as in milk) and combined with other substances (as in liver)

called also vitamin B₂

Medical Definition

riboflavin

noun

ri·​bo·​fla·​vin ˌrī-bə-ˈflā-vən, ˈrī-bə-ˌ 

variants also riboflavine

-ˌvēn 

: a yellow crystalline compound C₁₇H₂₀N₄O₆ that is a growth-promoting member of the vitamin B complex and occurs both free (as in milk) and combined (as in liver)

called also lactoflavin, ovoflavin, vitamin B₂