cae‧si‧um British English,
cesium American English /ˈsiːziəm/
noun [uncountable][
Date: 1800-1900;
Language: Latin;
Origin: caesius 'bluish grey']
a soft silver-white metal that is used in
photoelectric cells. It is a chemical
element: symbol Cs
[TahlilGaran] Dictionary of Contemporary English ▲