PENNATULA

‖Pen‐nat″u‐la (?), n.; pl. L. Pennatulæ (#), E. Pennatulas (#). [[NL., fr. L. penna a feather.]] (Zoöl.) 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.