Pronunciation: (kel'vin),[key] —n. 1. William Thomson,1st Baron, 1824–1907, English physicist and mathematician.
2. (l.c.) the base SI unit of temperature, defined to be 1/273.16 of the triple point of water. Abbr.: K
—adj. 1. Thermodynam.noting or pertaining to an absolute scale of temperature (Kel'vin scale") in which the degree intervals are equal to those of the Celsius scale and in which the triple point of water has the value 273.16 Kelvin. Cf. absolute temperature scale, Celsius (def. 2).
2. Also,Kel•winPronunciation: (kel'win).[key]a male given name.