Valoniaceae

plural noun

Va·​lo·​ni·​a·​ce·​ae

vəˌlōnēˈāsēˌē

: a family of coenocytic green algae usually classed among the Siphonocladales but sometimes especially formerly among the Siphonales see valonia

valoniaceous

və¦lōnē¦āshəs

adjective

Word History

Etymology

New Latin Valonia, 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!