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Definition of eurypterid

eurypterid

/jʊˈrɪp.tər.ɪd/
eu · ryp · ter · id
Plural:eurypterids
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eurypterid Lexical Profile

eurypterid Game Scores & Validity

• noun

1

An extinct marine and freshwater arthropod of the order Eurypterida, informally known as a sea scorpion, characterized by a segmented body, a spiked tail, and broad, paddle-like swimming appendages, prevalent during the Paleozoic era.

Example

"The museum recently unveiled a remarkably preserved fossil of a giant eurypterid that once dominated the shallow coastal waters of the Silurian period."

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Synonyms
View all synonyms for eurypterid

• Nearby Words

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Word Origin & Etymology

Coined in the mid-19th century from Modern Latin Eurypterida, derived from the genus Eurypterus. This combines the Greek 'eurys' (broad) and 'pteron' (wing or fin) in reference to their broad, paddle-like swimming appendages, followed by the suffix '-id'.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Eurypterid. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/eurypterid
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