Air which is breathed out.
Process of breathing out, expelling air from the lungs.
The act of breathing air from the lungs out through the mouth and nose.
Also called expiration, this is the act of breathing air from the lungs out through the bronchi, trachea, mouth and nose.
The process of breathing out; emanation of a gas or vapor. Opposite of inhalation.
Breathing outward; expelling carbon dioxide from the lungs.