noun piper·o·nyl \pīˈperənəl, pə̇ˈp-; ˈpipərəˌnil\

Definition of piperonyl



  1. :  the univalent radical (CH2O2)C6H3CH2 of piperonyl alcohol; 3,4-methylenedioxy-benzyl

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.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of piperonyl

International Scientific Vocabulary piperonal + -yl

Seen and Heard

What made you want to look up piperonyl? Please tell us where you read or heard it (including the quote, if possible).


feeling or affected by lethargy

Get Word of the Day daily email!