melatonin
noun/ˌmɛləˈtoʊnɪn/
Frequency rank: #13,583 of 20,003 in the WORDED list (wordfreq data)
Meaning
A hormone produced by the brain that regulates sleep and wakefulness cycles.
Example sentence
Doctors sometimes recommend taking melatonin to help adjust your sleep cycle when travelling across time zones.
More words in ranks 13,501–13,600
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