from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A pathological condition of the lungs marked by an abnormal increase in the size of the air spaces, resulting in labored breathing and an increased susceptibility to infection. It can be caused by irreversible expansion of the alveoli or by the destruction of alveolar walls.
- n. An abnormal distention of body tissues caused by retention of air.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An abnormal accumulation of air in tissues, most commonly the lungs.
- n. Pulmonary emphysema, a chronic lung disease.
from the GNU version of the Collaborative International Dictionary of English
- n. A swelling produced by gas or air diffused in the cellular tissue.
from The Century Dictionary and Cyclopedia
- n. In pathology, distention with air or other gases.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an abnormal condition of the lungs marked by decreased respiratory function; associated with smoking or chronic bronchitis or old age
Greek emphūsēma, inflation, from emphūsān, to blow in : en-, in; see en-2 + phūsān, to blow (from phūsa, bellows, bladder).(American Heritage® Dictionary of the English Language, Fourth Edition)