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riboflavin

American  
[rahy-boh-fley-vin, rahy-boh-fley-, -buh-] / ˌraɪ boʊˈfleɪ vɪn, ˈraɪ boʊˌfleɪ-, -bə- /
Also riboflavine

noun

Biochemistry.
  1. a vitamin B complex factor appearing as an orange-yellow, crystalline compound, C 1 7 H 2 0 N 4 O 6 , derived from ribose, essential for growth, found in milk, fresh meat, eggs, leafy vegetables, etc., or made synthetically, and used in enriching flour, in vitamin preparations, and in treating facial lesions.


riboflavin British  
/ ˌraɪbəʊˈfleɪvɪn /

noun

  1. Also: vitamin B2.   lactoflavin.  a yellow water-soluble vitamin of the B complex that occurs in green vegetables, germinating seeds, and in milk, fish, egg yolk, liver, and kidney. It is essential for the carbohydrate metabolism of cells. It is used as a permitted food colour, yellow or orange-yellow ( E101 ). Formula: C 17 H 20 N 4 O 6

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

riboflavin Scientific  
/ rībō-flā′vĭn /
  1. A water-soluble compound belonging to the vitamin B complex that is important in carbohydrate metabolism and the maintenance of mucous membranes. Riboflavin is found in milk, leafy vegetables, meat, and egg yolks. Also called vitamin B 2 . Chemical formula: C 17 H 20 N 4 O 6 .


Etymology

Origin of riboflavin

First recorded in 1930–35; ribo(se) + flavin

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

"Carrageenan, riboflavin, monosodium glutamate and 20 others that I can’t pronounce," he said, as one of the "MAHA moms" gravely intoned, "that stuff's really bad."

From Salon

Borage is a great addition to any diet — it's a good source of thiamin, folate and Vitamin B6, and a very good source of Vitamin A, Vitamin C, riboflavin and trace minerals.

From Salon

These included vitamins B12, B6 and D, folic acid and riboflavin which are essential for the development of foetuses in the womb.

From Science Daily

Similarly, multivitamins typically contain riboflavin, or vitamin B2, which causes your urine to turn bright yellow when it is cleared.

From Salon

Goodrich developed a process to use riboflavin, or vitamin B2, and rays of ultraviolet light to do the same thing.

From Washington Post