che·​lic·​er·​ate kə-ˈli-sə-ˌrāt How to pronounce chelicerate (audio)
plural chelicerates
: 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
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

Word History


after New Latin Chelicerata chelicerata

First Known Use

1951, in the meaning defined above

Time Traveler
The first known use of chelicerate was in 1951

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Dictionary Entries Near chelicerate

Cite this Entry

“Chelicerate.” Dictionary, Merriam-Webster, Accessed 17 Jun. 2024.

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