transcription, транскрипция: [ ˌrī-bə-ˈflā-vən, ˈrī-bə-ˌ ]
noun
Etymology: International Scientific Vocabulary ribo- + Latin flavus yellow — more at blue
Date: 1935
: a yellow crystalline compound C 17 H 20 N 4 O 6 of the vitamin B complex that occurs both free (as in milk) and combined (as in liver) as a component of coenzymes (as FMN) which are essential to normal metabolism — called also vitamin B 2