Chemistry. a compound, as NaFeO 2 , formed when ferric oxide is combined with a more basic metallic oxide.
Metallurgy. the pure iron constituent of ferrous metals, as distinguished from the iron carbides.

1875–80; < Latin ferr(um) iron + -ite1

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World English Dictionary
ferrite (ˈfɛraɪt)
1.  any of a group of ferromagnetic highly resistive ceramic compounds with the formula MFe2O4, where M is usually a metal such as cobalt or zinc
2.  any of the body-centred cubic allotropes of iron, such as alpha iron, occurring in steel, cast iron, etc
3.  any of various microscopic grains, probably composed of iron compounds, in certain igneous rocks
[C19: from ferri- + -ite1]

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

19c., from L. ferrum iron + -ite.
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica


a ceramic-like material with magnetic properties that are useful in many types of electronic devices. Ferrites are hard, brittle, iron-containing, and generally gray or black and are polycrystalline-i.e., made up of a large number of small crystals. They are composed of iron oxide and one or more other metals in chemical combination.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Then he tried to dampen the radiation by using a ferrite shield, but that
  became blazingly hot.
In the installation of ferrite tile absorbers on anechoic chamber walls, gaps
  between individual tiles are inevitable.
Aluminate is fine-grained and found between the ferrite crystals.
Both cavities employ current-controlled ferrite tuners for control of the
  resonant frequency.
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