'Expiratory' definitions:

Definition of 'expiratory'

adjective

Of or relating to the breathing out phase of respiration

Definition of 'Expiratory'

From: GCIDE

Expiratory \Ex*pir"a*to*ry\, a. (Physiol.) Pertaining to, or employed in, the expiration or emission of air from the lungs; as, the expiratory muscles. [1913 Webster]

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