How do you pronounce "polystyrene"?

In American English: /ˌpɑːˌliːˈstaɪˌriːn/ (pah-lee-STEYE-reen). In British English: /pˌɒlɪstˈaɪɹɛn/ (p-ol-IST-eyer). In Canadian English: /ˌpɑːˌliːˈstaɪˌriːn/ (pah-lee-STEYE-reen). In Australian English: /pˌɒlɪstˈaɪɹɛn/ (p-ol-IST-eyer).

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

Yes. In American English it's pronounced /ˌpɑːˌliːˈstaɪˌriːn/ (pah-lee-STEYE-reen), while in British English it's /pˌɒlɪstˈaɪɹɛn/ (p-ol-IST-eyer).

How to Pronounce "polystyrene"

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polystyrene

regional

/ˌpɑːˌliːˈstaɪˌriːn/

pah-lee-STEYE-reen

Syllable Breakdown

pɑːpo·liːly·staɪsty·riːnrene

Source

80%confidence📘 CMU Pronouncing Dictionary v0.7b

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Last updated: 2026-02-14