polystyrene

P3O1L1Y4S1T1Y4R1E1N1E1
/pɒliˈstaɪriːn/

noun

A vinylic polymer of styrene, CH₂CHphenyl.

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Less commonScrabble 19

Meanings

nounpolystyrene (plural polystyrenes)

plural polystyrenes

  1. chemistryA vinylic polymer of styrene, CH₂CHphenyl.

    It was 30 times lighter and more flexible than the polystyrene that had previously been used.

    1996 February 4, Julia Campbell, “Ray McIntire, 77, Dow Engineer And the Inventor Of Styrofoam”, in The New York Times
    1 more example

    Gerri (Gemma Arterton): Well, he might not be begging. He might be waiting for somebody. / Tom: Of course he's begging. He's got a polystyrene cup in front of him.

    2014, “Tom & Gerri” (1:14 from the start), in Inside No. 9, season 1, episode 3, spoken by Tom (Reece Shearsmith)
  2. chemistryAn alkane chain of benzene molecules, RCH₂CHphenylR.

Synonyms & antonyms

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Also see

Origin

  1. Proto-Indo-European*pleh₁-
  2. Proto-Indo-European*polh₁ús
  3. Ancient Greekπολῠ́ς (polŭ́s)
  4. Englishpoly-
  5. Ancient Greekστύραξ (stúrax)
  6. Latinstyrax
  7. Englishstyrene
  8. Englishpolystyrene

From poly- + styrene.

Full word history & related roots →

Translations

Catalan poliestirè
  • poliestirèpolymer
Chinese Mandarin 聚苯乙烯
  • 聚苯乙烯 (jùběnyǐxī)polymer
Czech polystyren
  • polystyrenpolymer
French polystyrène
  • polystyrènepolymer
Greek πολυστερίνη
  • πολυστερίνη (polysteríni)polymer
Hungarian polisztirol
  • polisztirolpolymer
Icelandic pólýstýren
  • pólýstýrenpolymer
Italian polistirene
  • polistirenepolymer
Japanese ポリスチレン
  • ポリスチレンpolymer
Malay ڤوليستيرينا, polistirena
  • ڤوليستيريناpolymer
  • polistirenapolymer
Portuguese poliestireno
  • poliestirenopolymer
Russian полистиро́л
  • полистиро́л (polistiról)polymer
Spanish poliestireno
  • poliestirenopolymer
Swedish polystyren
  • polystyrenpolymer
Yiddish פּאָליסטירען
  • פּאָליסטירען (polistiren)polymer
Cite this entry
APA

polystyrene. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/polystyrene

MLA

“polystyrene.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/polystyrene. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “polystyrene,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/polystyrene.

Source: polystyrene on Wiktionary, CC BY-SA 4.0.