Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary


noun vi·nyl·i·dene \vī-ˈni-lə-ˌdēn\

Definition of vinylidene

  1. :  a divalent radical CH2=C derived from ethylene by removal of two hydrogen atoms from one carbon atom

Origin and Etymology of vinylidene

International Scientific Vocabulary vinyl + -ide + -ene

First Known Use: 1898

Seen and Heard

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