pneu·mo·tho·rax 
(n′mō-thôrăks′, ny′-)
(n′mō-thôrăks′, ny′-)n.
Accumulation of air or gas in the pleural cavity, occurring as a result of disease or injury, or sometimes induced to collapse the lung in the treatment of tuberculosis and other lung diseases.
- primo
- Primo de Rivera y Orbaneja
- primogenital
- primogenitary
- primogenitor
- primogeniture
- primordial
- primordially
- primordial soup
- primordium
- primp
- primrose
- primrose path
- primula
- primum mobile
- primus
- primus inter pares
- prince
- Prince
- Prince Albert
- Prince Albert
- Prince Albert
- Prince Charming
- prince consort
- princedom