English noun: potassium | |||
1. | potassium (substance) 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 | ||
Broader (hypernym) | metal, metallic element | ||
Substance meronym | brine, carnallite, kainite, langbeinite, saltwater, seawater, sylvine, sylvite | ||