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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.
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
polytetrafluoroethylene is a noun meaning "a material used to coat cooking utensils and in industrial applications where sticking is to be avoided". It carries one recorded sense.
Definitions, synonyms and semantic relations for polytetrafluoroethylene come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.