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extragalactic

American  
[ek-struh-guh-lak-tik] / ˌɛk strə gəˈlæk tɪk /

adjective

  1. outside the Milky Way system.


extragalactic British  
/ ˌɛkstrəɡəˈlæktɪk /

adjective

  1. occurring or existing beyond the Galaxy

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of extragalactic

First recorded in 1850–55; extra- + galactic


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.

See Examples For:

The four researchers stressed in their paper that they haven't conclusively shown that the black hole's spin "truly powers the extragalactic jet," though the evidence certainly leans in that direction.

From Science Daily ● Nov. 14, 2023

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.

From New York Times ● May 4, 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.

From Scientific American ● Jan. 6, 2022

The rate at which IceCube detects extragalactic neutrinos is “a strong hint that these are the sources,” says theorist Eli Waxman of the Weizmann Institute of Science.

From Science Magazine ● Mar. 31, 2021

At such a rate, we will reach it in ten billion years, and extragalactic astronomy will then be a great deal easier.

From "Cosmos" by Carl Sagan

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