kelvin
nounUK /ˈkɛlvɪn/
US /ˈkɛlvɪn/
Kelvin is a way to measure how hot or cold something is, starting from the coldest possible temperature.
The scientist said the temperature outside was 300 kelvin.
RELATED WORDS
OTHER MEANINGS
2. The SI base unit of thermodynamic temperature, equal to one degree Celsius in size but starting at absolute zero.
Water freezes at 273.15 kelvin.
3. The absolute zero point on the Kelvin scale, the coldest temperature possible.
At zero kelvin, all molecular motion stops.
4. A unit used in science to describe color temperature of light.
The lamp has a color temperature of 4000 kelvin.