alumina
noun/əˈluːmɪnə/
/əˈluːmɪnə/
[uncountable] (specialist)- a white substance found in many types of rock, especially clayWord Originlate 18th cent.: from Latin alumen, alumin- related to aluta ‘a kind of leather’, on the pattern of words such as magnesia.
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
Check pronunciation:
alumina