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eurypterid

American

[yoo-rip-tuh-rid, yuh-] / jʊˈrɪp tə rɪd, jə- /

noun

any aquatic arthropod of the extinct order Eurypterida, from the Paleozoic Era, closely related to trilobites and scorpions.

eurypterid British

/ jʊˈrɪptərɪd /

noun

any large extinct scorpion-like aquatic arthropod of the group Eurypterida, of Palaeozoic times, thought to be related to the horseshoe crabs

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of eurypterid

From the New Latin word Eurypteridae, dating back to 1870–75. See eury-, -pterous, -id ²

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023