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

When that material collides with Earth’s magnetic field, particles flow toward the North and South Poles and interact with the gases in our atmosphere. —Addy Bink, The Hill, 5 Jan. 2025

Officially called aurora borealis, the northern lights are caused by interactions between the magnetic fields of the sun and the Earth, according to the U.K.'s Natural History Museum. —Dan Perry, Newsweek, 3 Jan. 2025

When directed at Earth, these solar wind streams can interact with our planet's magnetic field and trigger geomagnetic storm conditions. —Daisy Dobrijevic, Space.com, 3 Jan. 2025

During strong events like the one in May, though, those energetic particles interact with the magnetic field and gases in the atmosphere, producing the auroras. —Stephen Ornes, Discover Magazine, 2 Jan. 2025

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