D defs.my
Entry 2 senses Webster, 1913

degauss

/(dē̇*gous")/ · de·gauss · IPA /diːˈɡaʊs/
01 n. To make a (steel) ship's hull nonmagnetic by applying an opposing magnetic field.
  1. 1.
    To make a (steel) ship's hull nonmagnetic by applying an opposing magnetic field.
  2. 2.
    To remove irregular magnetization in (the electron gun of a cathode-ray tube); -- used to improve picture quality, especially in computer monitors.