magnetite (redirected from Triiron tetraoxide)
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magnetite an iron oxide, Fe3 O4, found in cells of some organisms, which may play a part in geomagnetic orientation because of its magnetic properties. See MAGNETOSOMES, MAGNETO TAXIS.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005