epinephrine Hear it!

epinephrine definition

☆ epi·neph·rine (ep′ə nef′rin, -rēn′)

noun

a hormone, CHNO, secreted by the medulla of the adrenal gland, that stimulates the heart, increases blood sugar, muscular strength, and endurance, etc.; adrenaline: it is extracted from animal adrenals or prepared synthetically

Etymology: epi- + nephr(o)- + -ine

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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