An absolute temperature scale in which a change of 1 Kelvin equals a change of 1 degree Celsius; 0ºK is the lowest temperature on the Kelvin scale. The freezing point of water is +273ºK (Kelvin) and the boiling point of +373ºK. It is used primarily for scientific purposes. It is also known as the Absolute Temperature Scale.
a scale to measure temperature based on absolute zero as the lowest possible temperature
An absolute temperature scale with 0 K at absolute zero and 273 K at the freezing point of water