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xiphosuran

[zif-uh-soo r-uh n] /ˌzɪf əˈsʊər ən/
adjective
1.
belonging or pertaining to the order Xiphosura, comprising the horseshoe crabs.
noun
2.
an arthropod of the order Xiphosura; a horseshoe crab.
Origin
1830-1840
1830-40; < New Latin Xiphosur(a) order name (irregular < Greek xíphos sword + -oura, neuter plural of -ouros -tailed, derivative of ourá tail) + -an
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British Dictionary definitions for xiphosuran

xiphosuran

/ˌzɪfəˈsjʊərən/
noun
1.
any chelicerate arthropod of the subclass Xiphosura, including the horseshoe crabs and many extinct forms
adjective
2.
of, relating to, or belonging to the subclass Xiphosura
Word Origin
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
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