/ˈkelvən/
Noun, pl. kelvins
1. A unit of measurement for temperature. It is one of the seven base units in the International System of Units (SI). (wikipedia.org)
2. A unit of thermodynamic temperature equal to 273.16−1 of the thermodynamic temperature of the triple point of water. (medilexicon.com)
3. The basic unit of thermodynamic temperature adopted under the Systeme International d’Unites. (wordnetweb.princeton.edu)
See Kelvin scale.