Definition of polyvinylidene in English:

polyvinylidene

(also polyvinylidine, polyvinyledene)

noun

Chemistry
  • Any of the synthetic resins which are made by polymerizing compounds containing the vinylidene group  C=CH₂.

Origin

1940s (in an earlier sense). From poly- + vinylidene.

Pronunciation

polyvinylidene

/ˌpɒlɪvʌɪˈnɪlɪdiːn/