electromagnetic wave

noun

: one of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays

Examples of electromagnetic wave in a Sentence

Recent Examples on the Web

These tools emit electromagnetic waves that travel into the soil and bounce back signals that experts use to interpret ground density, soil composition, and even empty spaces. —Andrew Paul, Popular Science, 16 Jan. 2025

These tests may include: X-ray: This imaging test uses a form of radiation called electromagnetic waves to take pictures of structures inside the body. —Laura Schober, Health, 16 Jan. 2025

Although better, the accuracy of this technique is limited by the periodicity of electromagnetic waves, which introduces inevitable ambiguities. —The Physics Arxiv Blog, Discover Magazine, 16 Dec. 2024

The power settings on a microwave control exactly how many (and when) electromagnetic waves are released into your food. —Audrey Bruno, SELF, 14 Oct. 2024

Word History

First Known Use

1882, in the meaning defined above

Kids Definition

electromagnetic wave

noun

: a wave (as a radio wave, wave of visible light, or X-ray) that consists of an associated electric and magnetic effect and travels at the speed of light

Medical Definition

electromagnetic wave

noun

: one of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays