Pterocaulon

noun

Ptero·​cau·​lon

ˌterəˈkȯlən,

-ˌlän

: a small genus of vigorous woolly or downy perennial herbs (family Compositae) with alternate decurrent leaves and flower heads in dense terminal clusters see black root, golden cudweed

Word History

Etymology

New Latin, from pter- + -caulon (from Greek kaulos stem, stalk

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!