The name is from Hindi खप्रा khaprā "destroyer" from खपना khapanā "to destroy". This is cognate with Sanskrit क्षापयति kṣāpayati, the causative of kṣiyate "to destroy". This is from Proto-Indo-European *dhgʷhi-yo-, the zero-grade suffixed form of *dhgʷhei- "to perish, destroy".
The zero-grade suffixed form *dhgʷhi-n-wo- became Greek φθίνειν "to decay" and φθίσις "wasting, consumption", borrowed as phthisis, an older word for tuberculosis.
*dhgʷhei- is found in the famous phrase *k̂leu̯os n̥dhgʷhitom, which some claim is an example of a reconstructed PIE phrase.
