thermosetting

T1H4E1R1M3O1S1E1T1T1I1N1G2

adjective

Becoming permanently (irreversibly) hard or solidifying when heated.

Similar
thermoset
Opposite
thermoplastic
OriginEnglish setting ← Ancient Greek θερμός (thermós) ← Proto-Hellenic *kʷʰermós →
UncommonScrabble 19
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Meanings

adjectivethermosetting (not comparable)
  1. not comparablechemistryBecoming permanently (irreversibly) hard or solidifying when heated.

Synonyms & antonyms

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

Similar
thermoset
Opposite
thermoplastic
Also see
duroplasticthermoset

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*gʷʰer-
  2. Proto-Indo-European*gʷʰermos
  3. Proto-Hellenic*kʷʰermós
  4. Ancient Greekθερμός (thermós)
  5. Englishthermo-
  6. Englishsetting
  7. Englishthermosetting

From thermo- + setting.

Full word history & related roots →
Cite this entry
APA

thermosetting. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/thermosetting

MLA

“thermosetting.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/thermosetting. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “thermosetting,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/thermosetting.

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