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

And Weintraub says the B-vitamin content such as riboflavin and folate in mushrooms are important for healthy development and cognitive function. —Daryl Austin, USA TODAY, 16 Nov. 2024

These include vitamin C and B vitamins (like thiamine, riboflavin, niacin, and folate), calcium, phosphorus, magnesium, zinc, manganese, chromium, sodium, and potassium. —Megan Nunn, Verywell Health, 10 Oct. 2024

Bulgur is particularly rich in fiber and B vitamins—such as riboflavin, niacin, and pyridoxine—which have heart-protective effects. —Lauren O'Connor, Ms, Health, 2 Oct. 2024

Prioritize whole grains Whole grain foods provide not only dietary fiber, but also a plethora of vitamins and minerals, like riboflavin, thiamin, niacin, and more. —Toby Amidor, Ms, Rd, Parents, 12 Sep. 2024

Word History

Etymology

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

First Known Use

1935, in the meaning defined above

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