1. (Science: physiology) To breathe in and out; to inspire and expire, as air; to breathe successively, for the purpose of maintaining the vitality of the blood.
A native of the land where I respire The clear air for a while. (Byron)
2. To breathe out; to exhale.
Origin: L. Respirare, respiratum; pref. Re- re- – spirare to breathe: cf. F. Respirer.
Draw air into, and expel out of, the lungs; I can breathe better when the air is clean; The patient is respiring.