tenulin

noun

ten·​u·​lin

ˈtenyələ̇n

plural -s

: a crystalline sesquiterpenoid lactone C₁₇H₂₂O₅ obtained from plants of the genus Helenium (as H. tenuifolium)

Word History

Etymology

New Latin tenuifolium (specific epithet of Helenium tenuifolium) (from Latin tenuis thin + folium leaf) + -lin (as in helenalin)

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!