Pen*nat"u*la\, n.; pl. L. Pennatul[ae], E. Pennatulas. [NL., fr. L. penna a feather.] (Zo["o]l.) Any one of numerous species of Pennatula, Pteroides, and allied genera of Alcyonaria, having a featherlike form; a sea-pen. The zooids are situated along one edge of the side branches.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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