[eks-huh-ley-shuh n, ek-suh-]
See more synonyms for exhalation on Thesaurus.com

Origin of exhalation

1350–1400; Middle English exalacion < Latin exhālātiōn- (stem of exhālātiō). See exhale, -ation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for exhalation

breath, expiration, respiration, vapor, emanation, air

Examples from the Web for exhalation

Historical Examples of exhalation

Word Origin and History for exhalation

late 14c., from Latin exhalationem (nominative exhalatio), noun of action from past participle stem of exhalare (see exhale).

Online Etymology Dictionary, © 2010 Douglas Harper

exhalation in Medicine


[ĕks′hə-lāshən, ĕk′sə-]
  1. The act or an instance of breathing out.expiration
  2. The giving forth of gas or vapor.
  3. Something, such as air or vapor, that is exhaled.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

exhalation in Science


  1. The act of breathing out air. During exhalation, the diaphragm relaxes and moves upward, causing compression of the lungs and an outward flow of air. Also called expiration Compare inhalation.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.