Phthisis

Webster's Condensed Dictionary- A Condensed Dictionary of the English Language · 1909 · p. 439

thi's is, a. (Med.) Pulmonary consumption — formerly applied, also, to many wasting diseases. [L. and Gr., Gr. phthkin, to decay, wane, dwindle; Skr. kski, to destroy, kshitu, decayed.] —