se‧le‧ni‧um /səˈliːniəm, sɪˈliːniəm/
noun [uncountable][
Date: 1800-1900;
Language: Modern Latin;
Origin: Greek selene 'moon']
a poisonous chemical substance, used in electrical instruments to make them sensitive to light. It is a chemical
element: symbol Se
[TahlilGaran] Dictionary of Contemporary English ▲