atomic number 19

Từ điển WordNet v3.1 - WordNet Dictionary

noun

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
• Syn:
potassium, K
• Hypernyms:
metallic element, metal
• Substance Holonyms:
seawater, saltwater, brine, carnallite, kainite,
langbeinite, sylvite, sylvine