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[aw-tuh-koid] /ˈɔ təˌkɔɪd/
noun, Physiology.
any physiologically active internal secretion, especially one of uncertain classification, as histamine or prostaglandin.
Origin of autacoid
1910-15; aut- + Greek ák(os) remedy + -oid
Related forms
autacoidal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for autacoid


(physiol) any natural internal secretion, esp one that exerts an effect similar to a drug
Word Origin
C20: from auto- + Greek akos cure + -oid
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
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autacoid in Medicine

autacoid au·ta·coid or au·to·coid (ô'tə-koid')
An organic substance, such as a hormone, produced in one part of an organism and transported by the blood or lymph to another part of the organism where it exerts a physiologic effect on that part.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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