magnetite

magnetite

[mag-ni-tahyt]
noun
a very common black iron oxide mineral, Fe 3 O 4 , that is strongly attracted by magnets: an important iron ore.

Origin:
1850–55; magnet + -ite1; compare German Magnetit

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World English Dictionary
magnetite (ˈmæɡnɪˌtaɪt)
 
n
a black magnetic mineral, found in igneous and metamorphic rocks and as a separate deposit. It is a source of iron. Composition: iron oxide. Formula: Fe3O4. Crystal structure: cubic
 
magnetitic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

magnetite
1851, from Ger. magnetit (1845); see magnet.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
magnetite   (māg'nĭ-tīt')  Pronunciation Key 
A brown to black mineral that is strongly magnetic. It crystallizes in the cubic system and commonly occurs as small octahedrons. Magnetite occurs in many different types of rock and is an important source of iron. Chemical formula: Fe3O4.
The American Heritage® Science Dictionary
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