Planck mass

noun

The unit of mass in the system of Planck units, defined as: m_P=√((hbar c)/G)≈2.1765×10⁻⁸ mbox kg

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Meanings

nounPlanck mass (plural Planck masses)

plural Planck masses

  1. natural sciencesThe unit of mass in the system of Planck units, defined as: m_P=√((hbar c)/G)≈2.1765×10⁻⁸ mbox kg
Cite this entry
APA

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

MLA

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

Chicago

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

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