Triadenum

noun

Tri·​a·​denum

ˌtrīəˈdēnəm

in some classifications

: a genus of North American herbs (family Guttiferae) comprising two forms usually included in the genus Hypericum but distinguished when separated chiefly by the pink or purple flowers and the three large glands alternating with three sets of stamens

Word History

Etymology

New Latin, from tri- + Greek adēn gland

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!