Kelvin
Kelvin (kel"vin) , noun
[from Lord Kelvin, English physicist.]
The SI unit of temperature, defined as being 1/273.16 of the triple point of water; abbreviated K. The melting point of water at 760 mm pressure is 273.15 Kelvins, and the boiling point 373.15 Kelvins. One degree Kelvin is equal to one degree Centigrade, and f degrees Fahrenheit.