noun ten·tac·u·lo·cyst

Definition of tentaculocyst

  1. :  one of the sense organs situated on the margin of the umbrella of many jellyfishes, consisting of a greatly modified and reduced tentacle containing a cavity with lithites, and often being sunk in a pit or enclosed in a pouch

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 tentaculocyst

New Latin tentaculum + -o- + English cyst

Seen and Heard

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


to criticize severely

Get Word of the Day daily email!