Pronunciation: (dī"u-mag-net'ik), [key]
of or pertaining to a class of substances, as bismuth and copper, whose permeability is less than that of a vacuum: in a magnetic field, their induced magnetism is in a direction opposite to that of iron. Cf. antiferromagnetic, ferrimagnetic, ferromagnetic, paramagnetic.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.