Meaning of ALUMINA in English

/ əˈluːmɪnə; NAmE / noun

[ U ] ( technical ) a white substance found in many types of rock, especially clay



late 18th cent.: from Latin alumen , alumin- related to aluta a kind of leather, on the pattern of words such as magnesia .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.