[ pə'tasɪəm ]
■ noun the chemical element of atomic number 19, a soft silvery-white reactive metal of the alkali-metal group. (Symbol: K )
Derivatives
potassic adjective
Origin
C19: from potash + -ium .
POTASSIUM
Meaning of POTASSIUM in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004