Definitions for absolute zero
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Random House Webster's College Dictionary
ab′solute ze′ro(n.)
the temperature of −273.16°C (−459.69°F), the hypothetical point at which all molecular activity ceases.
Category: Thermodynamics
Princeton's WordNet
absolute zero(noun)
(cryogenics) the lowest temperature theoretically attainable (at which the kinetic energy of atoms and molecules is minimal); 0 Kelvin or -273.15 centigrade or -459.67 Fahrenheit
Wiktionary
absolute zero(Noun)
The coldest possible temperature, zero on the Kelvin scale, or approximately 273.15 u00B0C, 459.67 u00B0F.
absolute zero(Noun)
A person or thing of absolutely no consequence.
Origin: First attested in 1806.
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