[ eks-huh-ley-shuh n, ek-suh- ]
/ ˌɛks həˈleɪ ʃən, ˌɛk sə- /


the act of exhaling.
something that is exhaled; vapor; emanation.

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. 2020

Examples from the Web for exhalation

Medical definitions for exhalation

[ ĕks′hə-lāshən, ĕk′sə- ]


The act or an instance of breathing out.expiration
The giving forth of gas or vapor.
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.

Scientific definitions for exhalation

[ ĕks′hə-lāshən ]

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.