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 nuclear fusion reaction is surrounded by a magnetic field more than 400,000 times more powerful than the Earth’s and chilled with cryogenic gases close to absolute zero. —Ella Nilsen, CNN Money, 6 May 2025

The satellite quartet has circled Earth since 2000, measuring the planet's magnetic field and its interactions with the solar wind. —Tereza Pultarova, Space.com, 5 May 2025

In 2004, a space telescope captured a magnetar — a type of star wrapped in magnetic fields trillions of times as strong as Earth’s — emitting a giant flare. —Paul Smaglik, Discover Magazine, 1 May 2025

Earth’s moving interior generates our planet’s magnetic field, an invisible shield that helps protect us and our atmosphere from harmful energy coming from space. —Margherita Bassi, Smithsonian Magazine, 21 Apr. 2025

Word History

First Known Use

1845, in the meaning defined above

Rhymes for magnetic field

• afield
• airfield
• annealed
• appealed
• brownfield
• coalfield
• concealed
• congealed
• cornfield
• downfield
• goldfield
• hayfield

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