magnetic induction

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The process by which a substance, such as iron or steel, becomes magnetized by a magnetic field. The induced magnetism is produced by the force of the field radiating from the poles of a magnet.

from the GNU version of the Collaborative International Dictionary of English.

• noun The process that makes a substance magnetic (temporarily or permanently).
• noun Same as magnetic field strength.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the amount of magnetic flux in a unit area perpendicular to the direction of magnetic flow
• noun the process that makes a substance magnetic (temporarily or permanently)