The degree of hotness is known as temperature. The lowest possible temperature of -273.15 at which a gas is supposed to have zero volume and at which entire molecular motion stops is called absolute temperature or absolute zero of temperature.
Temperature is the degree of hotness or intensity of heat present in object is called its temperature.
Absolute temperature is the temperature of an object on a scale where 0 is taken asabsolute zero. Absolute temperature scales are Kelvin and Rankine. Absolute zero is the lowest temperature at which the system is in a state of lowest possible (minimum) energy.No electronic device can operate at this temperature. -273 celcius is absolute temperature.