Planck relic

noun

A black hole with an event horizon on the order of a Planck length (~ 10⁻³⁵ metres), and a mass on the order of a Planck mass (~ 20 micrograms).

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Meanings

nounPlanck relic (plural Planck relics)

plural Planck relics

  1. quantum mechanics; relativity theory; quantum mechanics; relativity theoryastronomyA black hole with an event horizon on the order of a Planck length (~ 10⁻³⁵ metres), and a mass on the order of a Planck mass (~ 20 micrograms).
Cite this entry
APA

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

MLA

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

Chicago

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

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