Emphysema is defined as a medical condition where there is air in body tissues or where the air sacs in the lungs are damaged in a way that causes shortness of breath.(noun)
A medical condition caused by years of smoking that damages the air sacs in your lungs and makes breathing hard is an example of emphysema.
See emphysema in Webster's New World College Dictionary
Origin: ModL < Gr emphysēma, inflation < emphysaein, to inflate, blow in < en-, in + physaein, to blow < IE *phus- < base *pu-, *phu-, echoic of blowing with puffed cheeks
See emphysema in American Heritage Dictionary 4
Origin: Greek emphūsēma, inflation
Origin: , from emphūsān, to blow in
Origin: : en-, in; see en-2
Origin: + phūsān, to blow (from phūsa, bellows, bladder).
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