Standard Lemma guide

polystyrene

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /pɒliˈstaɪriːn/
  • General-American: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: P AA2 L IY2 S T AY1 R IY2 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A vinylic polymer of styrene, CH2CHphenyl.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

An alkane chain of benzene molecules, RCH2CHphenylR.

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

a polymer of styrene; a rigid transparent thermoplastic

Definition source: Princeton WordNet 3.0

Examples

  • expanded polystyrene looks like a rigid white foam and is used as packing or insulation

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: styrene, cinnamene, phenylethylene, vinylbenzene

Narrower terms: Styrofoam

History

Etymology

Etymology tree Proto-Indo-European *pleh1- Proto-Indo-European *polh1ús Ancient Greek πολῠ́ς (polŭ́s)lbor. English poly- Ancient Greek στύραξ (stúrax)der. Latin styrax French -ènebor. English -ene English styrene English polystyrene From poly- + styrene.

Across languages

Translations

16 source translations are retained for this English entry.

  • Catalan: poliestirè — polymer
  • Chinese Mandarin: 聚苯乙烯 (jùběnyǐxī) — polymer
  • Czech: polystyren — polymer
  • French: polystyrène — polymer
  • Greek: πολυστερίνη (polysteríni) — polymer
  • Hungarian: polisztirol — polymer
  • Icelandic: pólýstýren — polymer
  • Italian: polistirene — polymer
  • Japanese: ポリスチレン — polymer
  • Malay: ڤوليستيرينا — polymer
  • Malay: polistirena — polymer
  • Portuguese: poliestireno — polymer
  • Russian: полистиро́л (polistiról) — polymer
  • Spanish: poliestireno — polymer
  • Swedish: polystyren — polymer
  • Yiddish: פּאָליסטירען (polistiren) — polymer
Real reading context

polystyrene in complete knowledge articles