noun Riv·u·lar·ia \ˌrivyəˈla(a)rēə\

Definition of Rivularia

  1. :  a genus (the type of the family Rivulariaceae) of blue-green algae with radially arranged filaments exhibiting false branching and forming spherical to irregular somewhat gelatinous colonies

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 rivularia

New Latin, from Latin rivulus rivulet + New Latin -aria — more at rivulet

Seen and Heard

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


a rounded knoll or a ridge of ice

Get Word of the Day daily email!