plural noun

: a subclass or order of Anthozoa including chiefly compound coelenterates having polyps with 8-branched tentacles and eight septa and comprising the Stolonifera, Alcyonacea, Gorgonacea, and Pennatulacea
alcyonarian adjective or noun

Word History


New Latin, from Alcyonium + -aria

First Known Use

1840, in the meaning defined above

Time Traveler
The first known use of Alcyonaria was in 1840

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Dictionary Entries Near Alcyonaria

Cite this Entry

“Alcyonaria.” Dictionary, Merriam-Webster, Accessed 15 Jul. 2024.

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