absolute zero - definition - thermodynamics and thermal physics

Definition: The lowest possible temperature allowed by the laws of thermodynamics. At this temperature, molecules would possess the absolute minimum kinetic energy allowed by quantum mechanics (the Heisenberg Uncertainty Principle places a greater than zero lower limit on the kinetic energy of molecules). It is equivalent to -273.15°C or 0K (kelvin). At absolute zero, the entropy of any system vanished.
Also Known As: Zero Kelvin