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xiphosuran

American  
[zif-uh-soor-uhn] / ˌzɪf əˈsʊər ən /

adjective

  1. belonging or pertaining to the order Xiphosura, comprising the horseshoe crabs.

noun

  1. an arthropod of the order Xiphosura; a horseshoe crab.

xiphosuran British  
/ ˌzɪfəˈsjʊərən /

noun

  1. any chelicerate arthropod of the subclass Xiphosura, including the horseshoe crabs and many extinct forms

"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

adjective

  1. of, relating to, or belonging to the subclass Xiphosura

"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 xiphosuran

1830–40; < New Latin Xiphosur ( a ) order name (irregular < Greek xíphos sword + -oura, neuter plural of -ouros -tailed, derivative of ourá tail) + -an

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

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.