noun piper·y·lene \pīˈperəˌlēn, pə̇ˈp-; ˈpipər-\

Definition of piperylene



  1. :  an oily diolefin hydrocarbon CH3CH=CHCH=CH2 isomeric with isoprene formed in the cracking of petroleum and also made synthetically (as by exhaustive methylation of piperidine); 1,3-pentadiene

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 piperylene

International Scientific Vocabulary piperidine + -ylene

Seen and Heard

What made you want to look up piperylene? 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!