exhalation

[eks-huh-ley-shuhn, ek-suh-]

noun

1. the act of exhaling.

2. something that is exhaled; vapor; emanation.

exhalation

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.

2. Also called expiration

3. Compare inhalation

Word History and Origins

Origin of exhalation¹

1350–1400; Middle English exalacion < Latin exhālātiōn- (stem of exhālātiō ). See exhale, -ation