apnea. 1. asphyxia. 2

The period of ce ation of breathing after taking a long breath or during the proce of swallowing, or while performing a forced muscular breath.] effort. [Gr., a, priv., -fpnoe, a pneuma to sis (ap"nu-mah-to's is). Absence or deficiency of inflation, congenital a. See atelectasis. [Gr., a, priv., + pneuma toun, to inflate.] apneumia (ap-nu'me-ah). Congenital absence of the lungs. [Gr., a, priv., + pneumon, lung.] apo-. Prefix representing the Gr., apooff, from, away; used in compound words to denote detached, separate. a poa con it in (ap-o-ak-on'it-in). See a pac on it in. apo atropin (ap-o-at'ro-pin). See apatropin. apo caffein (ap-o-kaf'fe-in). A derivative of caffein, forming prismatic crystals, C7H7N3O5.