insecticidal

from WordNet (r) 3.0 (2006)

insecticidal
    adj 1: of or relating to insecticide

from The Collaborative International Dictionary of English v.0.48

Insecticide \In*sec"ti*cide\, n. [Insect + L. caedere to kill.]
   An agent or preparation for destroying insects; an insect
   powder or spray. -- {In*sec"ti*ci`dal}, a.
   [1913 Webster]