英语词汇“melatonin”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	melatonin
释义	melatonin noun /ˌmeləˈtəʊnɪn/ /ˌmeləˈtəʊnɪn/ [uncountable] (biology) jump to other results a hormone that helps regulate (= control) waking and sleeping in humans and animals, and which is sometimes used to treat insomnia (= the condition of being unable to sleep) Word Origin1950s: from Greek melas ‘black’ + serotonin.
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