Source : Webster's Revised Unabridged Dictionary (1913)

Helminthic \Hel*min"thic\, a. [Cf. F. helminthique.]
   Of or relating to worms, or Helminthes; expelling worms. --
   n. A vermifuge; an anthelmintic.

Source : WordNet®

helminthic
     adj : capable of expelling or destroying parasitic worms [syn: {anthelmintic},
            {anthelminthic}, {parasiticidal}]
     n : a medication capable of causing the evacuation of parasitic
         intestinal worms [syn: {vermifuge}, {anthelmintic}, {anthelminthic}]