plural noun

: an order of brown algae (class Isogeneratae) resembling those of the genus Ectocarpus but with the cells of the prostrate lower portion of the thallus arranged in transverse tiers

Word History


New Latin, from Tilopterid-, Tilopteris, genus of algae (from Greek tilos something plucked—from tillein to pluck—+ pteris fern) + -ales

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.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near Tilopteridales

Cite this Entry

“Tilopteridales.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Tilopteridales. Accessed 30 Nov. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!