Monaxonida

plural noun

Mon·​ax·​on·​i·​da

in some classifications

: a subclass or order of Demospongiae that comprises sponges with siliceous monaxonic megascleres and with or without spongin

Word History

Etymology

New Latin, from mon- + Greek axōn axis + New Latin -ida

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!