noun Lea·the·sia \lēˈthēzh(ē)ə\

Definition of Leathesia

  1. :  a genus of brown algae of the family Corynophlaeaceae having a globose generally hollow convoluted and gelatinous thallus made up of radiating threads

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 leathesia

New Latin, probably from the name Leathes + New Latin -ia

Seen and Heard

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


to help become familiar with something

Get Word of the Day daily email!