autonomic

adjective

au·​to·​nom·​ic ˌȯ-tə-ˈnä-mik How to pronounce autonomic (audio)
1
: acting or occurring involuntarily
autonomic reflexes
2
: relating to, affecting, or controlled by the autonomic nervous system or its effects or activity
autonomic drugs
autonomically adverb

Word History

Etymology

autonomy + -ic entry 1

First Known Use

1898, in the meaning defined at sense 1

Time Traveler
The first known use of autonomic was in 1898

Cite this Entry

“Autonomic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/autonomic. Accessed 9 Sep. 2025.

Kids Definition

autonomic

adjective
au·​to·​nom·​ic ˌȯt-ə-ˈnäm-ik How to pronounce autonomic (audio)
: of, relating to, controlled by, or being part of the autonomic nervous system

Medical Definition

autonomic

adjective
au·​to·​nom·​ic ˌȯt-ə-ˈnäm-ik How to pronounce autonomic (audio)
1
a
: acting or occurring involuntarily
autonomic reflexes
b
: relating to, affecting, or controlled by the autonomic nervous system
autonomic ganglia
autonomic dysfunction
2
: having an effect upon tissue supplied by the autonomic nervous system
autonomic drugs
autonomically adverb
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