echinoid

noun

echi·​noid i-ˈkī-ˌnȯid How to pronounce echinoid (audio) ˈe-kə-ˌnȯid How to pronounce echinoid (audio)
: sea urchin

Word History

Etymology

echinus + -oid entry 1, after New Latin Echinoidea, class name

First Known Use

1864, in the meaning defined above

Time Traveler
The first known use of echinoid was in 1864

Dictionary Entries Near echinoid

Echinodorus

echinoid

echinology

See More Nearby Entries 

Cite this Entry

“Echinoid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/echinoid. Accessed 25 Apr. 2024.

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Britannica.com: Encyclopedia article about echinoid

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