stenosis

(sten-o’sis) (Gr. στένωσις]. Narrowing or stricture of a duct or canal. aortic s., a narrowing of the aortic orifice of the heart or of the aorta itself. cardiac s., a narrowing or diminution of any heart pa age or cavity. cicatricial 8., stenosis caused by the contraction or shriveling of a cicatrix. Dittrich’s s., stenosis of the conus arteriosus. granulation s., stenosis or narrowing caused by the deposit of granulations or by their contraction. mitral s., a narrowing of the left auriculoventricular orifice. pulmonary s., narrowing of the opening between the pulmonary artery and the right ventricle.