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New American Oxford Dictionary

coltan

col tan |ˈkältan ˈkɑltæn ˈkɑltæn | noun a dull metallic mineral composed of columbite and tantalite, and refined to produce tantalum. ORIGIN early 21st cent.: from col (umbite ) + tan (talite ).

 

Oxford Dictionary

coltan

coltan |ˈkɒltan | noun [ mass noun ] a dull metallic mineral which is a combination of columbite and tantalite and which is refined to produce tantalum. ORIGIN 1990s: from columbite + tantalite .

 

Duden Dictionary

Coltan

Col tan Substantiv, Neutrum , das |Colt a n |das Coltan; Genitiv: des Coltans nach den Bestandteilen Col umbit und Tan talit vor allem in Afrika und Australien vorkommendes industriell genutztes Mineral

 

Spanish Dictionary

coltán

coltán nombre masculino Mineral compuesto por colombita y tantalita, de color negro o marrón muy oscuro, que se utiliza en microelectrónica, telecomunicaciones y en la industria aeroespacial :el principal productor de coltán es Australia .