Dictionary.com
definitions

incretion

[in-kree-shuh n]
noun Physiology.
  1. a substance, as a hormone, that is secreted internally.
  2. the process of such secretion.

Origin of incretion

in-2 + (se)cretion
Related formsin·cre·tion·ar·y, in·cre·to·ry [in-kri-tawr-ee, -tohr-ee] /ˈɪn krɪˌtɔr i, -ˌtoʊr i/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for incretion

incretion

noun physiol
  1. direct secretion into the bloodstream, esp of a hormone from an endocrine gland
  2. the substance so secreted
Derived Formsincretionary or incretory (ˈɪnkrɪtərɪ, -trɪ), adjective

Word Origin for incretion

C20: from in- ² + (se) cretion
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
incretion in Medicine

incretion

[ĭn-krē′shən]
n.
  1. The process of internal secretion characteristic of endocrine glands.
  2. The product of this process; a hormone.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.