vitamin B (complex)

noun

a group of unrelated water-soluble vitamins found in liver, yeast, etc., including: a) vitamin B1 (see thiamine) b) vitamin B2 (see riboflavin) c) vitamin B6 (see pyridoxine) d) nicotinic acide) pantothenic acidf) bioting) inositolh) para-aminobenzoic acidi) cholinej) folic acidk) vitamin B12 a complex vitamin, CHNOPCo, containing trivalent cobalt, essential for the normal maturation of erythrocytes, and for normal growth and neurological function, and used esp. in treating pernicious anemia and as an animal feed supplement