che·lic·er·ate 
(kə-lĭsər-āt′, -ĭt)
(kə-lĭsər-āt′, -ĭt)n.
Any of various arthropods of the subphylum Chelicerata, having mouthparts with chelicerae, a body composed of two main parts, and no antennae, and including the arachnids and the horseshoe crabs.
[From New Latin Chēlicerāta, subphylum name, from chēlicera, chelicera; see CHELICERA.]