Meaning of “melatonin” in the English Dictionary

british dictionary

"melatonin" in British English

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melatoninnoun [ U ]

uk /mel.əˈtəʊ.nɪn/ us /mel.əˈtoʊ.nɪn/ specialized

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