Planck temperature

noun

The fundamental upper limit of temperature conceivable under current models of physics, in which all matter is accelerated as quickly as possible to the speed of light, approximately 1.41679 × 10³² kelvins.

Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounPlanck temperature (plural Planck temperatures)

plural Planck temperatures

  1. natural sciencesThe fundamental upper limit of temperature conceivable under current models of physics, in which all matter is accelerated as quickly as possible to the speed of light, approximately 1.41679 × 10³² kelvins.

Origin

Named after German physicist Max Planck.

Full word history & related roots →
Cite this entry
APA

Planck temperature. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Planck%20temperature

MLA

“Planck temperature.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Planck%20temperature. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Planck temperature,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Planck%20temperature.

Source: Planck temperature on Wiktionary, CC BY-SA 4.0.