noun che·lic·er·ate \kə-ˈli-sə-ˌrāt, -rət\

Definition of chelicerate



  1. :  an arthropod of the subphylum Chelicerata having the first pair of appendages modified into chelicerae Arthropods constitute the largest phylum by far, with major subgroups of insects, chelicerates (spiders, mites, scorpions, and horseshoe crabs), and crustaceans … — Stephen Jay Gould, Natural History, January 1995


adjective the chelicerate nervous system chelicerate arthropods Together, these marine and terrestrial orders are called the chelicerate orders based on the structure of their mouthparts, in contrast to the orders to which insects and crustaceans belong. — Rosemary G. Gillepsie and Joseph C. Spagna, in Encylopedia of Insects, 2003

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Origin and Etymology of chelicerate

after New Latin Chelicerata chelicerata

First Known Use: 1951

Seen and Heard

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to criticize severely

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