2. (noun)potassium, K, atomic number 19 a light soft silver-white metallicelement of the alkalimetal 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
3. (noun)thousand, one thousand, 1000, M, K, chiliad, G, grand, thou, yard the cardinalnumber that is the product of 10 and 100