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intergalactic

American  
[in-ter-guh-lak-tik] / ˌɪn tər gəˈlæk tɪk /

adjective

  1. of, existing, or occurring in the space between galaxies.

    The science-fiction movie was about an intergalactic war.


intergalactic British  
/ ˌɪntəɡəˈlæktɪk /

adjective

  1. of, relating to, or existing between two or more galaxies

    the dark clouds of intergalactic space

"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 intergalactic

First recorded in 1925–30; inter- + galactic


Explanation

The adjective intergalactic describes something that's in between galaxies. An intergalactic star, for example, is not inside a galaxy, but between them — it's also called a "rogue star." You can call anything that relates to galaxies, or exists between them, intergalactic. If we were able to travel at the speed of light, intergalactic travel — travel from one galaxy to another — might be possible. The prefix inter- means "between" or "among," and it's followed by galactic, "pertaining to our galaxy," from the Late Latin root galaxias, "the Milky Way."

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Vocabulary lists containing intergalactic

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:

That shift showed that the gas was moving outward, carrying oxygen, carbon and other heavy elements away from the galaxies and into intergalactic space.

From Science Daily ● Oct. 2, 2026

Green Lanterns are intergalactic heroes who use a special ring to harness their imagination and willpower to manifest objects, manipulate energy and fly, as we see Jordan do, to Stewart’s chagrin.

From Los Angeles Times ● Aug. 17, 2026

Even when intergalactic forces take pains to make the Lantern Corps’ selection process fair, Earth’s unspoken dictates about worthiness make that impossible.

From Salon ● Aug. 14, 2026

Kyle Chandler stars as the DC Universe’s intergalactic policeman, who begrudgingly works with a younger member of his force played by Aaron Pierre.

From The Wall Street Journal ● Aug. 14, 2026

Moran and I got to the barn at the far side, dizzy with intergalactic travel.

From "Black Swan Green" by David Mitchell

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