Meaning of “niacin” in the English Dictionary

british dictionary

"niacin" in British English

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niacinnoun [ U ]

uk /ˈnaɪə.sɪn/ us /ˈnaɪə.sɪn/ specialized

one of the vitamin B complex found in foods such as wheat, beef, chicken, and milk, important for producing energy from food and for keeping the digestion and nervous system healthy

(Definition of “niacin” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)