Meaning of emphysema

em•phy•se•ma

Pronunciation: (em"fu-sē'mu, -zē'-), [key]
— n. Pathol.
  1. a chronic, irreversible disease of the lungs characterized by abnormal enlargement of air spaces in the lungs accompanied by destruction of the tissue lining the walls of the air spaces.
  2. any abnormal distention of an organ, or part of the body, with air or other gas.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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