noun cy·clo·octa·tet·ra·ene

Definition of cyclooctatetraene



  1. :  a liquid unsaturated cyclic hydrocarbon C8H8 that resembles benzene in its cyclic completely conjugated structure but is much more reactive than benzene and is usually made by catalytic polymerization of acetylene under pressure

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 cyclooctatetraene

International Scientific Vocabulary cycl- + octa- + tetra- + -ene

Seen and Heard

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


capable of being understood in two ways

Get Word of the Day daily email!