kelvin
noun /ˈkelvɪn/
/ˈkelvɪn/
(abbreviation K)
(plural kelvin or kelvins)
The plural kelvin is preferred in scientific language.- a unit for measuring temperature. One kelvin is equal in size to one degree Celsius, but the Kelvin scale starts at absolute zero and water freezes at 273.15 kelvin.Word Originlate 19th cent.: named after Lord Kelvin (1824-1907), British physicist and natural philosopher.