plural noun

: an order of Alcyonaria including the sea pens, sea pansies, and related forms that develop a colony which usually resembles a feather, leaf, or club, is often more or less bilaterally symmetrical with the polyps arranged along the distal part of a central axis or on lateral branches and has the basal end of the axis destitute of polyps and embedded in the mud of the sea bottom
adjective or noun

Word History


New Latin, from Pennatula + -acea

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Dictionary Entries Near Pennatulacea

Cite this Entry

“Pennatulacea.” Dictionary, Merriam-Webster, Accessed 3 Dec. 2023.

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