[ 'astəti:n ]
■ noun the chemical element of atomic number 85, a very unstable radioactive member of the halogen group. (Symbol: At )
Origin
1940s: from Gk astatos 'unstable' + -ine 4 .
[ 'astəti:n ]
■ noun the chemical element of atomic number 85, a very unstable radioactive member of the halogen group. (Symbol: At )
Origin
1940s: from Gk astatos 'unstable' + -ine 4 .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004