plural noun

: a family of red algae (order Cryptonemiales) of which the thallus becomes hard and brittle from the deposition of calcium carbonate which sometimes forms beautifully colored deposits like coral and contributes to reef formation

Word History


New Latin, from Corallina, type genus + -aceae

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 Corallinaceae

Cite this Entry

“Corallinaceae.” Dictionary, Merriam-Webster, Accessed 24 Apr. 2024.

Love words? Need even more definitions?

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