[uh-ton-ik, ey-ton-]


  1. unaccented.
  2. Obsolete.voiceless.
Pathology. characterized by atony.


Grammar. an unaccented word, syllable, or sound.

Nearby words

  1. atonality,
  2. atone,
  3. atonement,
  4. atonement, day of,
  5. atonia,
  6. atonic bladder,
  7. atonicity,
  8. atony,
  9. atop,
  10. atopen

Origin of atonic

1720–30; a-6 + tonic; in pathology sense, aton(y) + -ic Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for atonic

British Dictionary definitions for atonic



(of a syllable, word, etc) carrying no stress; unaccented
pathol lacking body or muscle tone


an unaccented or unstressed syllable, word, etc, such as for in food for thought
Derived Formsatonicity (ˌætəˈnɪsɪtɪ, ˌeɪtəʊ-), noun

Word Origin for atonic

C18: from Latin atonicus, from Greek atonos lacking tone; see atony

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

Medicine definitions for atonic




Relating to, caused by, or exhibiting lack of muscle tone.
Related formsat′o•nici•ty (ăt′ə-nĭsĭ-tē, ăt′n-ĭs-) n.

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