noun pen·nat·u·la \pəˈnachələ\

Definition of pennatula

  1. 1 capitalized :  a common genus (the type of the family Pennatulidae) of sea pens

  2. 2 plural pennatulae \-chəˌlē\ or pennatulas :  sea pen


\-lə̇d\ adjective or noun

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of pennatula

New Latin, from Late Latin, feminine of pennatulus winged, from Latin pennatus winged + -ulus -ule

Seen and Heard

What made you want to look up pennatula? Please tell us where you read or heard it (including the quote, if possible).


a rounded knoll or a ridge of ice

Get Word of the Day daily email!