magnetic field

noun

: the portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected

Examples of magnetic field in a Sentence

Recent Examples on the Web

The sloshing of metal-rich fluid in the outer core generates electrical currents that power Earth’s magnetic field, which protects our planet from deadly solar radiation. —Mindy Weisberger, CNN, 5 July 2024

But a new map of the galactic center and its magnetic field offers scientists an unprecedentedly detailed look into the forces that powered our galaxy’s emergence. —Riis Williams, Scientific American, 25 June 2024

These are giant clouds of plasma that are emitted from the Sun’s surface and maintain their own powerful magnetic fields. —The Physics Arxiv Blog, Discover Magazine, 24 June 2024

While Earth's atmosphere and magnetic field protect the planet from these solar events, Mars has no such protection. —Devika Rao, theweek, 28 May 2024

Word History

First Known Use

1845, in the meaning defined above

Kids Definition

magnetic field

noun

: the portion of space near a magnetic body or a body carrying an electric current within which magnetic forces due to the body or current can be detected

Medical Definition

magnetic field

noun

: the portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected

the magnetic field of the heart