/ Dictionary / Index X xiphosuran: Meaning and Definition of Find definitions for: xiph•o•su•ran Pronunciation: (zif"u-soor'un), [key] — adj. belonging or pertaining to the order Xiphosura, comprising the horseshoe crabs. —n. an arthropod of the order Xiphosura; a horseshoe crab. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. xiphoid Xizang Related Content Daily Word Quiz: ontiguous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language