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⇱ styrofoam - WordReference.com Dictionary of English

styrofoam

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UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˈstaɪərəfəʊm/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ˈstaɪrəˌfoʊm/ ,USA pronunciation: respelling(stī′rə fōm′)


WordReference Random House Learner's Dictionary of American English © 2026
Sty•ro•foam /ˈstaɪrəˌfoʊm/USA pronunciation  [Trademark.][uncountable]
  1. Chemistry, Trademarksa kind of plastic made from polystyrene:a cup made of Styrofoam.

WordReference Random House Unabridged Dictionary of American English © 2026
Sty•ro•foam  (stī′rə fōm′),USA pronunciation [Trademark.]
  1. Chemistry, Trademarksa brand of expanded plastic made from polystyrene.

Collins Concise English Dictionary © HarperCollins Publishers::
Styrofoam /ˈstaɪrəˌfəʊm/ n
  1. trademark (sometimes not capital) a light, expanded polystyrene plastic
Etymology: 20th Century: from polystyrene + foam
'styrofoam' also found in these entries (note: many are not synonyms or translations):
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