Merriam-Webster Logo
SINCE 1828
dictionary thesaurus view recents

Rivulariaceae

plural noun
Save Word
Riv·​u·​lar·​i·​a·​ce·​ae

Definition of Rivulariaceae

: a family of freshwater blue-green algae (order Hormogonales) consisting of slender gradually attenuated or hair-tipped filaments usually growing in tufts attached to the substrate and frequently mucilaginous — see calothrix , rivularia

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!

Other Words from Rivulariaceae

rivulariaceous \ ¦⸗⸗ˌ⸗⸗¦āshəs \ adjective

History and Etymology for Rivulariaceae

New Latin, from Rivularia, type genus + -aceae

Keep scrolling for more

Learn More about Rivulariaceae

Statistics for Rivulariaceae

Cite this Entry

“Rivulariaceae.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/Rivulariaceae. Accessed 15 December 2019.

Comments on Rivulariaceae

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

Show Comments  Hide Comments 

WORD OF THE DAY

delectation

Listen to the pronounciation of delectation

delight or enjoyment

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

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

Words at Play
Ask the Editors
Word Games