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A scale of absolute temperature having the same degree increments as those of the Fahrenheit scale, in which the freezing point of water is 491.69° and the boiling point is 671.69°.
[After William John Macquorn Rankine (1820-1872), Scottish engineer and physicist.]
(General Physics) an absolute scale of temperature in which the unit of temperature is equal to that on the Fahrenheit scale and the zero value of temperature is equal to –459.67°F. Compare Kelvin scale