Definition of vinylidene
: 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: 1898See Words from the same year
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).