DEMAGNETIZE

De‐mag″net‐ize (?), v. t. 1. 1. To deprive of magnetic properties. See Magnetize.
If the bar be rapidly magnetized and demagnetized. Am. Cyc. 2. 2. To free from mesmeric influence; to demesmerize.
— De‐mag′net‐i‐za″tion, n. — De‐mag″net‐i′zer (#), n.