hormone
hor·mone
noun \ˈhȯr-ˌmōn\Definition of HORMONE
1
a : a product of living cells that circulates in body fluids (as blood) or sap and produces a specific often stimulatory effect on the activity of cells usually remote from its point of origin—called also internal secretion; see plant hormone b : a synthetic substance that acts like a hormone
2
—hor·mone·like \-ˌlīk\ (audio pronunciation) adjective
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