ant·hel·min·tic 
(ănt′hĕl-mĭntĭk, ăn′thĕl-) also ant·hel·min·thic (-thĭk)
(ănt′hĕl-mĭntĭk, ăn′thĕl-) also ant·hel·min·thic (-thĭk)adj.
Acting to expel or destroy parasitic intestinal worms.
n.
An agent that destroys or causes the expulsion of parasitic intestinal worms.
[ANT(I)- + Greek helmins, helminth-, worm; see wel-2 in the Appendix of Indo-European roots.]