Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
polyunsaturated is an adjective meaning "(of long-chain carbon compounds especially fats) having many unsaturated bonds". It carries one recorded sense.
(of long-chain carbon compounds especially fats) having many unsaturated bonds
Definitions, synonyms and semantic relations for polyunsaturated come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.