noun
used in some classifications; includes the orders Xiphosura and Eurypterida
• Syn: ↑class Merostomata
• Hypernyms: ↑arthropod
• Member Holonyms: ↑Chelicerata, ↑superclass Chelicerata
• Member Meronyms: ↑Xiphosura, ↑order Xiphosura, ↑Eurypterida, ↑order Eurypterida
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\\ˌ ̷ ̷ ̷ ̷ˈstōməd.ə\ noun pluralUsage: capitalized
in some classifications : a class or other category of chelicerate arthropods including the Xiphosura and Eurypterida and sometimes made a subdivision of Arachnida
Useful english dictionary. 2012.