plural noun

Che·​lic·​er·​ata kə-ˌli-sə-ˈrä-tə How to pronounce Chelicerata (audio)
: a subphylum or other division of the phylum Arthropoda comprising forms having chelicerae and lacking antennae and including the horseshoe crabs and eurypterids, spiders, scorpions, and sea spiders
A fossil eurypterid, representing the Chelicerata.Stephen Jay Gould, Wonderful Life, 1989
see arachnida , merostomata , pycnogonida

Word History


borrowed from New Latin, Latinization (with New Latin -ata -ata) of French chélicérés, from chélicère chelicera + -és, plural of , adjective and participle ending going back to Latin -ātus -ate entry 3

First Known Use

1919, in the meaning defined above

Time Traveler
The first known use of Chelicerata was in 1919

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Cite this Entry

“Chelicerata.” Dictionary, Merriam-Webster, Accessed 24 Apr. 2024.

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