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gibbsite

[gib-zahyt]
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noun
  1. a mineral, hydrated aluminum oxide, Al2O3·3H2O, occurring in whitish or grayish crystals and masses: an important constituent of bauxite ore.
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Origin of gibbsite

1815–25; named after George Gibbs (died 1833), American mineralogist; see -ite1
Also called hydrargillite.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for gibbsite

gibbsite

noun
  1. a mineral consisting of hydrated aluminium oxide: a constituent of bauxite and a source of alumina. Formula: Al(OH) 3
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Word Origin

C19: named after George Gibbs (died 1833), American mineralogist
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012