'Sertularian' definitions:

Definition of 'sertularian'

(from WordNet)
noun
Feathery colony of long-branched stems bearing stalkless paired polyps

Definition of 'Sertularian'

From: GCIDE
  • Sertularian \Ser`tu*la"ri*an\, n. (Zool.) Any species of Sertularia, or of Sertularidae, a family of hydroids having branched chitinous stems and simple sessile hydrothecae. Also used adjectively. [1913 Webster]