GADOLINIUM Meaning of GADOLINIUM in English [ ˌgadə'lɪnɪəm ]■ noun the chemical element of atomic number 64, a soft silvery-white metal of the lanthanide series. (Symbol: Gd )OriginC19: from gadolinite . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004