1. (the basic unit of thermodynamic temperature adopted under the Systeme International d'Unites)
kelvin, K
synonim: kelwin

2. (a light soft silver-white metallic element of the alkali metal group
oxidizes rapidly in air and reacts violently with water
is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite)
potassium, K, atomic number 19: : synonim: potas