The Collaborative International Dictionary of English v.0.48:

Cachectic \Ca*chec"tic\, Cachectical \Ca*chec"tic*al\, a. [L.
   cachecticus, Gr. ?????????: cf. F. cachectique.]
   Having, or pertaining to, cachexia; as, cachectic remedies;
   cachectical blood. --Arbuthnot.
   [1913 Webster]