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merostomata

Merostomata is a 11 letter word which starts with the letter M and ends with the letter A for which we found 1 definitions.

Definition
(n. pl.) A class of Arthropoda allied to the Crustacea. It includes the trilobites Eurypteroidea and Limuloidea. All are extinct except the horseshoe crabs of the last group. See Limulus.
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