Meaning of pneumothorax

pneu•mo•tho•rax

Pronunciation: (n"mu-thôr'aks, -thōr'-, ny"-), [key]
— n. Pathol.
  1. the presence of air or gas in the pleural cavity.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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