infrared galaxy

American

noun

Astronomy.

a galaxy that radiates strongly in the infrared portion of the electromagnetic spectrum.

Etymology

Origin of infrared galaxy

First recorded in 1965–70

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A prime example of this phenomenon is the nearest ultraluminous infrared galaxy, Arp 220, which is located 250 million light-years away.

From Scientific American

After a ponderous chapter on infrared galaxy counts come quasars and active galactic nuclei, galactic clusters, the history of star-formation and, finally, Spitzer’s role in estimating the redshifts of the most distant galaxies, a remarkable achievement for a telescope of its size.

From Nature

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023