(also transition element )
■ noun Chemistry any of the set of metallic elements occupying a central block in the periodic table, e.g. iron, manganese, chromium, and copper.
(also transition element )
■ noun Chemistry any of the set of metallic elements occupying a central block in the periodic table, e.g. iron, manganese, chromium, and copper.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004