ANDESITE Meaning of ANDESITE in English [ 'andɪzʌɪt , -sʌɪt ]■ noun Geology a dark, fine-grained volcanic rock.Derivativesandesitic adjective OriginC19: named after the Andes mountains. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004