Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
niacin | Yes | No | No | No |
B-complex vitamin | Yes | No | No | No |
niacin (noun) | B-complex vitamin (noun) |
---|---|
a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract | originally thought to be a single vitamin but now separated into several B vitamins |