ne·o·nic·o·tin·oid 
(nē′ō-nĭkə-tə-noid′)
(nē′ō-nĭkə-tə-noid′)n.
Any of a class of synthetic compounds having a chemical structure similar to that of nicotine and related alkaloids, used as systemic insecticides on plants and as topical or systemic insecticides on animals.
[NEO- + NICOTIN(E) + -OID.]