absolute zero noun
: the temperature that is believed to be the lowest possible temperature
: a theoretical temperature characterized by complete absence of heat and motion and equivalent to exactly −273.15°C or −459.67°F
First Known Use of ABSOLUTE ZERO
absolute zero noun (Medical Dictionary)
: a theoretical temperature characterized by complete absence of heat and equivalent to exactly −273.15°C or −459.67°F
absolute zero noun (Concise Encyclopedia)
Temperature at which a thermodynamic system (see thermodynamics) has the lowest energy, 0 kelvin (K). It corresponds to 459.67°F (273.15°C) and is the lowest possible temperature theoretically achievable by a system. A gas at constant pressure contracts as the temperature is decreased. A perfect gas would reach zero volume at absolute zero. However, a real gas condenses to a liquid or a solid at a temperature higher than absolute zero. At absolute zero, the system's molecular energy is minimal and none is available for transfer to other systems. The Kelvin temperature scale has absolute zero as its zero point, and its fundamental unit is the kelvin.
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