Definition of Ideal gas law constant

ideal gas law constant ( ideal gas constant; universal gas constant)
(R) A constant R equal to PV/(nT) for ideal gases , where the pressure, volume, moles, and temperature of the gas are P, V, n, and T, respectively. The value and units of R depend on the units of P, V, and T. Commonly used values and units of R include: 82.055 cm³ atm K^-1 mol^-1; 0.082055 L atm mol^-1 K^-1; 8.31434 J mol^-1 K^-1; 1.9872 cal K^-1 mol^-1; 8314.34 L Pa mol^-1 K^-1; 8.31434 Pa m³ mol^-1 K^-1.