radio galaxy

noun

: a galaxy that is a powerful source of radio waves

Example Sentences

Recent Examples on the Web The galaxy, which is named Alcyoneus, is a giant radio galaxy. —Joshua Hawkins, BGR, 19 Feb. 2022 MeerKAT is already trying to find similarly gargantuan filaments in other radio galaxies. —Robin George Andrews, Scientific American, 16 Apr. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radio galaxy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1959, in the meaning defined above

Time Traveler
The first known use of radio galaxy was in 1959

Dictionary Entries Near radio galaxy

radio-frequency amplification

radio galaxy

radiogenetics

See More Nearby Entries 

Cite this Entry

“Radio galaxy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radio%20galaxy. Accessed 25 Mar. 2023.

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More from Merriam-Webster on radio galaxy

Britannica.com: Encyclopedia article about radio galaxy

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