a D vitamin, C 27 H 43 OH, occurring in fish-liver oils, that differs from vitamin D 2 by slight structural differences in the molecule. Also called cholecalciferol .
VITAMIN D[SUB]3[/SUB]
Meaning of VITAMIN D[SUB]3[/SUB] in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012