Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Any of various arthropods of the order Xiphosura, having a long pointed telson extending from the rear of the abdomen. The order includes the horseshoe crabs and many extinct species.

from The Century Dictionary.

  • Of or pertaining to the Xiphosura, as a horseshoe-crab.
  • noun A member of the group Xiphosura; a xiphosure.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun zoology Any member of the order Xiphosura, including horseshoe crabs.
  • adjective zoology Of or pertaining to the order Xiphosura.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[From New Latin Xiphosūra, order name : Greek xiphos, sword + Greek ourā, tail; see ors- in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Xiphosura.

Examples

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