How do you pronounce "polypropylene"?

In American English: /ˌpɑːˌliːˈproʊpəˌliːn/ (pah-lee-PROHP-uh-leen). In British English: /pˌɒlɪpɹˈəʊpaɪlˌiːn/ (p-ol-IPR-ohp-eyel). In Canadian English: /ˌpɑːˌliːˈproʊpəˌliːn/ (pah-lee-PROHP-uh-leen). In Australian English: /pˌɒlɪpɹˈəʊpaɪlˌiːn/ (p-ol-IPR-ohp-eyel).

Is "polypropylene" pronounced differently in American and British English?

Yes. In American English it's pronounced /ˌpɑːˌliːˈproʊpəˌliːn/ (pah-lee-PROHP-uh-leen), while in British English it's /pˌɒlɪpɹˈəʊpaɪlˌiːn/ (p-ol-IPR-ohp-eyel).

How to Pronounce "polypropylene"

polypropylene

regional

/ˌpɑːˌliːˈproʊpəˌliːn/

pah-lee-PROHP-uh-leen

Syllable Breakdown

pɑːpo·liːly·proʊppr·əopy·liːnlene

Source

80%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14