noun cor·o·nule \ˈkȯrəˌnyül, kəˈrōˌ-\

Definition of coronule



  1. :  the peripheral ring of spines on the shells of some diatoms (as members of the genus Stephanodiscus)

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 coronule

New Latin coronula, from Medieval Latin, from Latin corona crown + -ula -ule

Seen and Heard

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


to cast off or become cast off

Get Word of the Day daily email!