Definify.com

Webster 1913 Edition

‖

Noun.

[NL., fr. Gr. [GREEK] broad + [GREEK] a wing.]

(Paleon.)

A genus of extinct Merostomata, found in Silurian rocks. Some of the species are more than three feet long.

Eurypterus m

A taxonomic genus within the family Eurypteridae – extinct sea scorpions from the Ordovician and Silurian period.