Standard Lemma guide

thermosetting

adj · 2 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

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  • US: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: TH ER1 M OW0 S EH2 T IH0 NG Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Becoming permanently (irreversibly) hard or solidifying when heated.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adjective

Meaning 2

having the property of becoming permanently hard and rigid when heated or cured

Definition source: Princeton WordNet 3.0

Examples

  • the phenol resins and plastics were the original synthetic thermosetting materials

Meaning relationships

Synonyms: thermoset

Antonyms: thermoplastic

History

Etymology

Etymology tree Proto-Indo-European *gwher-der. Ancient Greek θερμός (thermós)der. English thermo- English setting English thermosetting From thermo- + setting.