[ mag-ni-tahyt ]
/ ˈmæg nɪˌtaɪt /


a very common black iron oxide mineral, Fe3O4, that is strongly attracted by magnets: an important iron ore.

Nearby words

  1. magnetic variation,
  2. magnetic wire,
  3. magnetic wood,
  4. magnetics,
  5. magnetism,
  6. magnetizable,
  7. magnetization,
  8. magnetize,
  9. magnetizing force,
  10. magneto

Origin of magnetite

1850–55; magnet + -ite1; compare German Magnetit Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for magnetite

British Dictionary definitions for magnetite


/ (ˈmæɡnɪˌtaɪt) /


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: Fe 3 O 4 . Crystal structure: cubic
Derived Formsmagnetitic (ˌmæɡnɪˈtɪtɪk), adjective

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

Word Origin and History for magnetite



magnetic iron ore, 1840, from German magnetit; see magnet + -ite (2).

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for magnetite


[ măgnĭ-tīt′ ]

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 Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.