K

K

1. atomic symbol for potassium
2. unit symbol for kelvin

kelvin (K)

SI unit of thermo­dynamic temperature, equal to 1 / 273.16 of the thermodynamic temperature of the triple point of water

Note 1: A difference of temperature has the same numerical value expressed in either kelvins or degrees Celsius.
Note 2: The unit symbol for the kelvin is the letter K without a degree sign (°).

Kr

atomic symbol for krypton