alumina

Etymology

From (combining form of) Latin alumen + -a.

noun

  1. Aluminum oxide, especially when used in mining, material sciences or ceramics, a refractory solid compound.
    The apocrenates of iron and manganese are slightly soluble; those of lime, magnesia and alumina are insoluble. 1875, Journal of the Bath and West of England Society and Southern Counties Association for the Encouragement of Agriculture, Arts, Manufactures, and Commerce, volumes 7-8, page 133

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