- breathing, external respiration, respiration, ventilation - the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation
--1 is a kind of bodily process, body process, bodily function, activity
--1 has parts:
--1 has particulars:exhalation, expiration, breathing out; inhalation, inspiration, aspiration, breathing in