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Synonyms

autonomic

American  
[aw-tuh-nom-ik] / ˌɔ təˈnɒm ɪk /
Also autonomical

adjective

  1. autonomous.

  2. of or relating to the autonomic nervous system.

  3. Physiology. under the control of the autonomic nervous system.

  4. Cell Biology. produced by internal forces or causes; spontaneous.


autonomic British  
/ ˌɔːtəˈnɒmɪk /

adjective

  1. occurring involuntarily or spontaneously

  2. of or relating to the autonomic nervous system

  3. Also: autonomous.  (of plant movements) occurring as a result of internal stimuli

"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

Other Word Forms

Etymology

Origin of autonomic

First recorded in 1825–35; autonom(y) + -ic

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Several other doctors have since told him that gabapentin is likely the cause of his condition, including a neuropsychiatrist who diagnosed him with severe dysautonomia, or impairment of the autonomic nervous system.

From The Wall Street Journal Dec. 25, 2025

It's part of the autonomic nervous system, which controls things we don't think about, like breathing, heart rate and digestion.

From BBC Nov. 8, 2025

Your autonomic nervous system regulates heartbeat and blood pressure, but with POTS, the body stops keeping these functions in check, causing symptoms like nausea, dizziness, and extreme fatigue.

From Slate Sep. 15, 2025

"That may mean that we may be actually inducing a form of plastic effect on the brain-body interaction circuit that is also involved in autonomic functions like blood pressure and heart rate," Romo-Nava said.

From Science Daily Dec. 21, 2023

Speaking is an autonomic business; you may search for words as you go along, but they are found for you by agents in your brain over which you exercise no direct control.

From "The Lives of a Cell" by Lewis Thomas

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