[zif-uh-soo r-uh n]
belonging or pertaining to the order Xiphosura, comprising the horseshoe crabs.
an arthropod of the order Xiphosura; a horseshoe crab.
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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any chelicerate arthropod of the subclass Xiphosura, including the horseshoe crabs and many extinct forms
of, relating to, or belonging to the subclass Xiphosura
Word Origin for xiphosuran
C19: from New Latin Xiphosura, irregularly from Greek xiphos sword + oura tail
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