Polyadelphia

plural noun

Poly·​adel·​phia

in former classifications

: a class of plants having stamens united by the filaments into three or more fascicles

Word History

Etymology

New Latin, from Greek, possession of many brothers, from polyadelphos with many brothers (from poly- + adelphos brother) + -ia -y

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!