pneumothorax

noun

abnormal collection of air in the pleural space that causes an uncoupling of the lung from the chest wall

Wiktionary

Pronunciation: /ˈnjuː.məʊˌθɔ.ɹæks/ / /ˈnju.moʊˌθɔ.ɹæks/

noun

Etymology: Etymology tree Proto-Indo-European *plew- Proto-Indo-European *-mṓ Proto-Indo-European *pléwmō Ancient Greek πλεύμων (pleúmōn) ▲ Ancient Greek πνέω (pnéō)influ. ▲ Ancient Greek πνεῦμα (pneûma)influ. Ancient Greek πνεύμων (pneúmōn)bor. English pneumo- English thorax English pneumothorax From pneumo- + thorax.

Presence of air inside the pleural cavity, usually caused by injury either to the lung or the chest wall.