coltan

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col·tan

 (kŏl′tăn′)
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

coltan

(ˈkɒlˌtæn)
n
(Elements & Compounds) a metallic ore found esp in the E Congo, consisting of columbite and tantalite (a source of the element tantalum)
[C20: from columbite + tantalite]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.coltan - a valuable black mineral combining niobite and tantalite; used in cell phones and computer chips
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
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