electromagnetic spectrum

noun

: the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light

Examples of electromagnetic spectrum in a Sentence

Recent Examples on the Web

UPEs are orders of magnitude more intense than this thermal radiation, with wavelengths in the visible or near-visible light range of the electromagnetic spectrum. —Conor Feehly, Scientific American, 16 June 2025

Its appearance strongly suggests a much more effective stealth capability to absorb or spoof radar signals over a wide range of the electromagnetic spectrum. —David Szondy june 12, New Atlas, 12 June 2025

Inside each giant white sphere is a device that looks like a larger version of a home satellite TV dish, with a transmitter that emits pulses in the microwave region of the electromagnetic spectrum. —Andrea Thompson, Scientific American, 30 May 2025

Black on the color spectrum While there’s no black in a rainbow, photons anywhere in the electromagnetic spectrum can be seen as black. —Michael J. Murdoch, The Conversation, 3 Feb. 2025

Word History

First Known Use

1924, in the meaning defined above

Rhymes for electromagnetic spectrum

• electrum

Kids Definition

electromagnetic spectrum

noun

: the entire range of wavelengths or frequencies of electromagnetic waves extending from gamma rays to the longest radio waves and including visible light

Medical Definition

electromagnetic spectrum

noun

: the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light