plural noun Cys·to·nec·tae

Definition of Cystonectae

in some classifications

  1. :  a suborder of siphonophores including only the Portuguese man-of-war


\-ktəs\ adjective

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 cystonectae

New Latin, from cyst- + -nectae

Seen and Heard

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


to criticize severely

Get Word of the Day daily email!