The Collaborative International Dictionary
Parasiticide
Parasiticide \Par`a*sit"i*cide\
(p[a^]r`[.a]*s[i^]t"[i^]*s[imac]d), n. [Parasite + L. caedere
to kill.]
Anything used to destroy parasites.
--Quain.
Wiktionary
parasiticide
n. Any substance used to kill parasites.