Standard Lemma guide

eurypterid

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /jʊəˈɹɪp.tə.ɹɪd/

1

noun

Meaning 1

A large, prehistoric, carnivorous arthropod, of the class †Eurypterida, thought to be one of the first animals to venture onto land.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

large extinct scorpion-like arthropod considered related to horseshoe crabs

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: arthropod

History

Etymology

Borrowed from translingual Eurypterida. By surface analysis, eury- + -pter + -id.