mag·net·i·za·tion (m?g?n?-t?-z??sh?n)n.1. a. The process of making a substance temporarily or permanently magnetic, as by insertion in a magnetic field.b. The extent to which an object is magnetized.2. The property of being magnetic.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.