alpha-1-antitrypsin

al·pha–1–an·ti·tryp·sin

noun
\-ˌwən-ˌant-i-ˈtrip-sən, -ˌan-ˌtī-\

Definition of ALPHA-1-ANTITRYPSIN

: a trypsin-inhibiting serum protein which inhibits the digestive action of elastase on the tissues of the lungs and whose deficiency is associated with the development of emphysema