chelicerate

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

Definition of chelicerate 

: 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

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Other Words from chelicerate

chelicerate 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

First Known Use of chelicerate

1951, in the meaning defined above

History and Etymology for chelicerate

after New Latin Chelicerata chelicerata

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The first known use of chelicerate was in 1951

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