WordReference Random House Unabridged Dictionary of American English © 2026
ex•ha•la•tion
(eks′hə lā′shən, ek′sə-),USA pronunciation n.
- Physiologythe act of exhaling.
- Physiologysomething that is exhaled;
vapor;
emanation.
- Latin exhālātiōn- (stem of exhālātiō). See exhale, -ation
- Middle English exalacion 1350–1400
'exhalation' also found in these entries (note: many are not synonyms or translations):