Spelling Bee Hive found 1 result for melatonin. This page contains the same results as searching for that word in the app.
melatonin - noun; Level 3; origin: English; pronunciation: ¦melə¦tōnə̇n. a vertebrate hormone derived from serotonin, secreted by the pineal gland especially in darkness, and linked to circadian rhythm regulation.
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