Illustration of eurypterid
eurypterid
noun
eu·ryp·ter·id
yu̇-ˈrip-tə-rəd 
: any of an order (Eurypterida) of usually large aquatic Paleozoic arthropods resembling scorpions and related to the horseshoe crabs
called also sea scorpion
eurypterid
adjective
Examples of eurypterid in a Sentence
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Mixopterids, the most remarkable of the eurypterid (sea scorpion) species, are known for their large limbs to capture prey.
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Naomi Ludlow, USA TODAY, 30 Oct. 2021
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Naomi Ludlow, USA TODAY, 30 Oct. 2021
Cite this Entry
“Eurypterid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eurypterid. Accessed 1 Jul. 2025.
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