phthĭsis, is, f., = φθίσις,
consumption , phthisis : vera phthisis est, Cels. 3, 22; Sen. Ep. 91, 5; 75, 10; Plin. 26, 7, 21, § 38; 31, 6, 33, § 62; Col. 6, 14; Juv. 13, 95; Gell. 4, 2, 4.
phthisis is, f , φθίσις, consumption, Iu. ...
An Elementary Latin Dictionary
·noun A wasting or consumption of the tissues. The term was formerly applied to many wasting disease...
Webster's Dictionary of the English Language