plural -s
: a poisonous bitter crystalline compound C15H18O4 that is the active principle of sneezeweed

Word History


helen- (from New Latin Helenium, genus name of the sneezeweed Helenium autumnale) + -al- (from New Latin autumnale, specific epithet of the sneezeweed Helenium autumnale) + -in

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Dictionary Entries Near helenalin

Cite this Entry

“Helenalin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/helenalin. Accessed 30 Sep. 2023.

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