phthisis (ti's is). 1

Any wasting, atrophic disease. 2. As usually employed, pulmonary tuberculosis, fibroid p. 1. Interstitial pneumonia. 2. Pulmonary tuberculosis in which dense layers of fibrous: ti ues surround the cavity, usually in the upper lobe, the pleura is thickened, and the lower lobe is gradually invaded by the sclerotic change, p. mesaraic a, p. mesenteric a. Tuberculosis of the mesenteric glands. pulmonary p. Pulmonary tuberculosis, of advanced degree, with suppuration and destruction of lung ti ue, producing fever and consequent wasting of the body, stonecutter's p. Syn.: chal i cos is. A wasting form of bronchopneumonia due to the irritation of inhaled particles of stone. [Gr., phthisis, from phthiein, to waste.]