ˈthīsə̇s, ˈtī- noun
( plural phthi·ses -(ˌ)sēz)
Etymology: Latin, from Greek; akin to Greek phthiein, phthinein to decay, wane, Sanskrit kṣiṇāti, kṣiṇoti he destroys, and probably to Latin sitis thirst
: a progressively wasting or consumptive disease ; usually : pulmonary tuberculosis : consumption