1. [ noun ] (chemistry) 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
Synonyms: atomic_number_19 K
Related terms: metallic_element seawater langbeinite kainite sylvite carnallite
Similar spelling:   poet-singer