PNEUMOTHORAX

(Lat.), n. m. Nu2m(pnuam)-o(oa)-thor'- a2x(asx). Gen., -ac'os (-is). From irvevntov, the lung, and ftoipaf, the thorax. Fr.,p. Ger., P., Lufthrust. The presence of gas in the pleural cavity, [a. 34.] P. a soupape (Fr.). Of See. p. in which a portion of pulmonary or pleural ti ue acts as a valve in the pulmonary perforation, [a, 34.] P. ferm6 (Fr.). Of S6e, p. with closure of the pulmonary perforation, [a, 34.] P. ouvert (Fr.). Of Se, p. in which the persistence of the pulmonary perforation permits free acce of air to the pleural cavity, [a. 34.] P. subphrenic us. p. caused by diaphragmatic perforation, [a, 34.] [s. 299]