|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 |
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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