of or relating to the autonomic nervous system.
Physiology. under the control of the autonomic nervous system.
Cell Biology. produced by internal forces or causes; spontaneous.

Also au·to·nom·i·cal.

Origin of autonomic

First recorded in 1825–35; autonom(y) + -ic
Related formsau·to·nom·i·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for autonomic

Contemporary Examples of autonomic

  • He equated this response with altered activity of the autonomic nervous system.

    The Daily Beast logo
    Why Do We Cry?

    Michael Trimble

    January 10, 2013

Historical Examples of autonomic

British Dictionary definitions for autonomic



occurring involuntarily or spontaneously
of or relating to the autonomic nervous system
Also: autonomous (of plant movements) occurring as a result of internal stimuli
Derived Formsautonomically, adverb
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

Word Origin and History for autonomic

1832, "pertaining to autonomy" (q.v.); used mostly in physiology. Autonomical is recorded from 1650s.

Online Etymology Dictionary, © 2010 Douglas Harper

autonomic in Medicine




Functionally independent; not under voluntary control.
Relating to the autonomic nervous system.
Related formsau′to•nomi•cal•ly adv.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.