Meaning of polyunsaturation in English:

polyunsaturation

Pronunciation /ˌpɒlɪʌnˌsatʃʊˈreɪʃn/ /ˌpɒlɪʌnˌsatjʊˈreɪʃn/

noun

Chemistry
  • The property of being polyunsaturated; the extent of this; the presence of a number of carbon–carbon double or triple bonds in a compound.

Origin

1950s; earliest use found in Journal of the American Chemical Society. From poly- + unsaturation, after polyunsaturated.