1. <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.

(10 Mar 1998)