Definition of aluminous in English:


Syllabification: a·lu·mi·nous
Pronunciation: /əˈlo͞omənəs


  • (Chiefly of minerals and rocks) containing alumina or aluminum.
    More example sentences
    • Mafic and ultramafic rocks predominate, although a few examples of metasedimentary rocks are known, including aluminous lithologies.
    • Associated units are sillimanite-bearing aluminous metasediments, quartzites, and arnphibolites.
    • Plagioclase is commonly variably replaced by aluminous prehnite, which indicates temperatures below 400°C.


late Middle English: from Latin aluminosus, from alumen, alumin- (see alum1).

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