- an important group of water-soluble vitamins containing vitamin B1, vitamin B2, etc.
- a large group of water-soluble vitamins occurring esp in liver and yeast: includes thiamine, riboflavin, nicotinic acid, pyridoxine, pantothenic acid, biotin, choline, folic acid, and cyanocobalaminSometimes shortened to: B complex
- A group of water-soluble vitamins including thiamine, riboflavin, niacin, pantothenic acid, biotin, pyridoxine, folic acid, inositol, and vitamin B12 and occurring chiefly in yeast, liver, eggs, and some vegetables.B complex
- Any of a group of water-soluble vitamins important for normal cell growth and metabolism. The vitamins of the vitamin B complex include thiamine (vitamin B1), riboflavin (vitamin B2), pyridoxine (vitamin B6), cobalamin (vitamin B12), pantothenic acid, niacin, biotin, and folic acid.