It is sent out of our bodies by the compressure of the lungs, and mingles with the air that surrounds us.
c.1400, from Middle French compression (14c.), from Latin compressionem (nominative compressio) "a pressing together," noun of action from past participle stem of comprimere (see compress (v.)). Related: Compressional. Compressional wave is attested from 1887.
compression com·pres·sion (kəm-prěsh'ən)
The state of being compressed.
See data compression.