Merostomata

Definitions

  • WordNet 3.6
    • n Merostomata used in some classifications; includes the orders Xiphosura and Eurypterida
    • ***
Webster's Revised Unabridged Dictionary
    • prop. n. pl Merostomata (Zoöl) A class of Arthropoda, allied to the Crustacea. It includes the trilobites, Eurypteroidea, and Limuloidea. All are extinct except the horseshoe crabs (Limulus) of the last group. See Limulus.
    • ***

Etymology

Webster's Revised Unabridged Dictionary
NL., fr. Gr. me`ros thigh + , -, mouth