plural -s
: a white crystalline lactone C15H20O2 obtained from elecampane root

Word History


International Scientific Vocabulary alant + -o- + lactone; probably originally formed as German alantolakton

First Known Use

1892, in the meaning defined above

Time Traveler
The first known use of alantolactone was in 1892

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!

Dictionary Entries Near alantolactone

Cite this Entry

“Alantolactone.” Dictionary, Merriam-Webster, Accessed 15 Jun. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!