Considered to be the point at which theoretically no molecular activity exists or the temperature at which the volume of a perfect gas vanishes. It is also the zero point of the Kelvin Temperature Scale. The value is -273.16 degrees Kelvin, -273 degrees Celsius and -459.6 degreees Fahrenheit.
Absolute zero is the lower limit of the thermodynamic temperature scale, a state at which the enthalpy and entropy of a cooled ideal gas reaches its minimum value, taken as 0. The theoretical temperature is determined by extrapolating the ideal gas law; by international agreement, absolute zero is taken as -273.15° on the Celsius scale (International System of Units), which equates to -459.67° on the Fahrenheit scale (United States customary units or Imperial units). The corresponding Kelvin and Rankine temperature scales set their zero points at absolute zero by definition.
Dictionary source: WordNet 2.0
English to English translation of Absolute zero
Theorised to be the lowest temperature it is possible to attain. As matter is cooled down, so the motion of atoms and molecules gradually ceases. At absolute zero all movement stops. It occurs at -273 degrees on the centigrade scale and defines the zero degrees point on the Kelvintemperature scale.
[física] s. zero absoluto, m.; temperatura teórica na qual cessa todo e qualquer movimento molecular e um corpo não terá mais energia térmica. O valor do zero absoluto é estimado em -273,15° centígrados, -459,67° Fahrenheit, 0° Kelvin e 0° Rankine