Magnetic remanence refers to the residual magnetic field that remains in a material after an external magnetic field has been removed. Synonyms for magnetic remanence include residual magnetism, residual remanence, and magnetic after-effect. This phenomenon is a crucial factor in various fields such as geology, physics, and engineering. In geology, magnetic remanence is used to study the Earth's magnetic field history, while in physics, it is used to understand the properties of ferromagnetic materials. In engineering, magnetic remanence is useful in designing electronic devices such as hard drives. Understanding the different synonyms for magnetic remanence can help individuals better comprehend the properties and applications of this phenomenon in different fields.