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exhalation

[ eks-huh-ley-shuhn, ek-suh- ]
/ ˌɛks həˈleÉȘ ʃən, ˌɛk sə- /
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noun
the act of exhaling.
something that is exhaled; vapor; emanation.

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Origin of exhalation

1350–1400; Middle English exalacion<Latin exhālātiƍn- (stem of exhālātiƍ). See exhale, -ation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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Scientific definitions for exhalation

exhalation
[ ĕksâ€Čhə-lāâ€Čshən ]

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 HeritageŸ Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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