Definition of aluminous in English:

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Pronunciation: /əˈlo͞omənəs/


(Chiefly of minerals and rocks) containing alumina or aluminum.
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).

For editors and proofreaders

Syllabification: a·lu·mi·nous

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