Spelling Bee Hive found 1 result for serotonin. This page contains the same results as searching for that word in the app.
serotonin - noun; Level 4; origin: Latin; pronunciation: ˌsirəˈtōnə̇n, -tän-. a compound present in blood platelets and serum that constricts blood vessels and functions as a neurotransmitter.
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