Planck mass

Noun

• The unit of mass in the system of Planck units, defined as: $m\_\backslash text\{P\}=\backslash sqrt\{\backslash frac\{\backslash hbar\; c\}\{G\}\}\; \backslash approx\; 2.1765\; \backslash times\; 10^\{-8\}\; \backslash mbox\; \{\; kilograms\}$