absolute zero

Noun
  1. (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 (synset 105020388)
    referred to in: cryogenics, cryogeny - the branch of physics that studies the phenomena that occur at very low temperatures
    is a type of: temperature - the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)

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