CRISTOBALITE Meaning of CRISTOBALITE in English [ krɪ'stəʊbəlʌɪt ]■ noun a form of silica which is the main component of opal.OriginC19: named after Cerro San Cristóbal in Mexico, where it was discovered. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004