Pronunciation: (pir"i-dok'sēn, -sin), [key]
a derivative of pyridine, C8H11NO3, occurring in whole-grain cereals, meats, fish, etc., and also made synthetically: required for the prevention of pellagra and the formation of hemoglobin; vitamin B6. Also,pyr•i•dox•inPronunciation: (pir"i-dok'sin). [key]
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.