n. The principal ore of aluminium; a clay-like mineral, being a mixture of hydrated oxides and hydroxides.
the GNU version of the Collaborative International Dictionary of English
n. A ferruginous hydrate of alumina. It is the most commonly used ore for the preparation of aluminum and alumina. It is also used for the lining of furnaces which are exposed to intense heat.
The Century Dictionary and Cyclopedia
n. A clay found at Les Baux, near Aries in France, and elsewhere, in concretionary grains or oölitic
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a clay-like mineral; the chief ore of aluminum; composed of aluminum oxides and aluminum hydroxides; used as an abrasive and catalyst
Word Usage
"This ship is carrying a chemical called bauxite, which is used to make aluminum."