bauxite

[bawk-sahyt, boh-zahyt]
noun
a rock consisting of aluminum oxides and hydroxides with various impurities: the principal ore of aluminum.

Origin:
1860–65; named after Les Baux, near Arles in S France; see -ite1

bauxitic [bawk-sit-ik, boh-zit-] , adjective
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World English Dictionary
bauxite (ˈbɔːksaɪt)
 
n
a white, red, yellow, or brown amorphous claylike substance comprising aluminium oxides and hydroxides, often with such impurities as iron oxides. It is the chief ore of aluminium. General formula: Al2O3.nH2O
 
[C19: from French, from (Les) Baux in southern France, where it was originally found]

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Etymonline
Word Origin & History

bauxite
1861, clayey mineral containing aluminum, from Fr. bauxite, from Les Baux, near Soles, where it was first found. The place name is from Prov. Li Baus, lit. "the precipices."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
bauxite   (bôk'sīt')  Pronunciation Key 
A soft, whitish to reddish-brown rock consisting mainly of hydrous aluminum oxides and aluminum hydroxides along with silica, silt, iron hydroxides, and clay minerals. Bauxite forms from the breakdown of clays and is a major source of aluminum.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The country has almost half of the world's bauxite reserves and is the second-largest bauxite producer.
Bauxite is an ore used in the manufacture of aluminum.
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