absolute zeroEnglishOxford New American Dictionaryabsolute zero /ˈˌabsəˈˌl(y)o͞ot ˈzirō, , ˈˌæbsəˈˌl(j)ut ˈzɪroʊ , ˈzērō, ˈziroʊ/ ▸ noun the lowest temperature that is theoretically possible, at which the motion of particles that constitutes heat would be minimal. It is zero on the Kelvin scale, equivalent to –273.15°C or –459.67°F.
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