internal secretion


noun

physiol a secretion, esp a hormone, that is absorbed directly into the blood

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Medical definitions for internal secretion

internal secretion

n.

A secretion that is produced by an endocrine gland and discharged directly into the bloodstream; a hormone.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.