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

Unlike the Sun, which relies on intense gravitational pressure to sustain plasma, fusion reactors use magnetic fields or lasers to stabilize the reaction. —New Atlas, 22 Dec. 2024

The movements are powered by a magnetic field that enables them to self-assemble and are programmed by varying the angle by which they are magnetized. —Alex Knapp, Forbes, 20 Dec. 2024

This period of high magnetic turbulence, known as the solar maximum, results in our nearest star launching elevated amounts of radiation as solar flares, as well as spewing more magnetic fields and plasma as coronal mass ejections. —Joe Spring, Smithsonian Magazine, 20 Dec. 2024

And these earliest potentially habitable environments would have been shielded from radiation by a strong planetary magnetic field, which Mars lacks today, Horgan added. —Ashley Strickland, CNN, 10 Dec. 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