Word History


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

Cite this Entry

“Echinoid.” Dictionary, Merriam-Webster, Accessed 21 Apr. 2024.

More from Merriam-Webster on echinoid

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