EXPIRA'TION, noun [Latin expiratio, from expiro. See Expire.] 1. The act of breathing out, or forcing the air from the lungs. Respiration consists of expiration and inspiration. 2. The last emission of breath; death. 3. The emission of volatile matter from any substance; evaporation; exhalation; as the expiration of warm air from the earth. 4. Matter expired; exhalation; vapor; fume. 5. Cessation; close; end; conclusion; termination of a limited time; as the expiration of a month or year; the expiration of a term of years; the expiration of a lease; the expiration of a contract or agreement.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI