B-complex vitamin bcomp·lex·vi·tamin uncommon noun 1. originally thought to be a single vitamin but now separated into several B vitamins SynonymsB-complex vitaminB complexvitamin B complexvitamin BB vitaminB Related words Broader terms water-soluble vitamin Narrower terms cholineinositolpantothenic acidvitamin B1vitamin B12vitamin B2vitamin B6vitamin Bc WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
