extragalactic

adjective
ex·​tra·​ga·​lac·​tic | \ ˌek-strə-gə-ˈlak-tik How to pronounce extragalactic (audio) \

Definition of extragalactic

: originating or existing outside the Milky Way galaxy also : of or relating to extragalactic space extragalactic astronomy

Examples of extragalactic in a Sentence

Recent Examples on the Web What began during lockdown as a live multimedia cartoon, about a feline mission to stop extragalactic rats from devouring the moon, is now a hilarious graphic novel. New York Times, 4 May 2022 The spacecraft could perform other transformational science, such as studying the extragalactic background light, the collective cosmic glow from all luminous objects in the observable universe. Jonathan O'callaghan, Scientific American, 6 Jan. 2022 In fact, scientists discovered several extragalactic explosions that year. Joshua Hawkins, BGR, 15 Dec. 2021 Researchers believe their findings will enable other astronomers to find other extragalactic planets with wide orbits, hopefully leading to larger discoveries for the scientific community. Zoe Christen Jones, CBS News, 27 Oct. 2021 Then in 1997, an Italian and Dutch satellite called BeppoSAX confirmed that gamma-ray bursts were extragalactic, in some cases originating many billions of light-years away. Jonathan O'callaghan, Wired, 18 July 2021 Then in 1997, an Italian and Dutch satellite called BeppoSAX confirmed that gamma-ray bursts were extragalactic, in some cases originating many billions of light-years away. Jonathan O'callaghan, Wired, 18 July 2021 Then in 1997, an Italian and Dutch satellite called BeppoSAX confirmed that gamma-ray bursts were extragalactic, in some cases originating many billions of light-years away. Jonathan O'callaghan, Wired, 18 July 2021 Then in 1997, an Italian and Dutch satellite called BeppoSAX confirmed that gamma-ray bursts were extragalactic, in some cases originating many billions of light-years away. Jonathan O'callaghan, Wired, 18 July 2021 See More

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

First Known Use of extragalactic

1851, in the meaning defined above

History and Etymology for extragalactic

International Scientific Vocabulary

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The first known use of extragalactic was in 1851

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Dictionary Entries Near extragalactic

extraforaneous

extragalactic

extragalactic nebula

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Last Updated

18 May 2022

Cite this Entry

“Extragalactic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extragalactic. Accessed 2 Jul. 2022.

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