plural noun Pen·nat·u·la·cea \pəˌnachəˈlāshēə\

Definition of Pennatulacea

  1. :  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


\-shəs\ adjective

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Origin and Etymology of pennatulacea

New Latin, from Pennatula + -acea

Seen and Heard

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a trip made at another's expense

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