ring magnet

noun

1. a ring-shaped permanent magnet.

Word History and Origins

Origin of ring magnet¹

First recorded in 1845–50

Example Sentences

A copper disc, when inserted within the air gap of the ring magnet, was brought into rapid rotation.

From Project Gutenberg

Among them was one in which he attached to his oscillator a ring magnet with a small air gap between the poles.

From Project Gutenberg