in·​ter·​stel·​lar | \ ˌin-tər-ˈste-lər How to pronounce interstellar (audio) \

Definition of interstellar

: located, taking place, or traveling among the stars especially of the Milky Way galaxy

Examples of interstellar in a Sentence

Recent Examples on the Web

Scientists found an interstellar iron isotope in Antarctic snow samples—which hints that our region of the universe may be the remnant of an ancient exploding star. Christopher Intagliata, Scientific American, "Secrets of the Universe Trapped in Antarctic Snow," 14 Aug. 2019 To break free of these mighty bodies, Iona uses their gravity to launch herself slingshot-style, like an interstellar probe. Matthew Gault, Time, "One of the Best Indie Video Games of 2015 Is Back As a Deluxe Edition," 12 Aug. 2019 Two interstellar agents try to stop an alien disguised as a lingerie model from destroying the world. Los Angeles Times, "Here are the feature and TV films airing the week of Sunday, Aug. 11, 2019," 11 Aug. 2019 Most notably, thanks to their location in a galaxy’s uncrowded outskirts, red giants are less prone to the contaminating effects of interstellar dust and other nearby stars than Cepheids. Leila Sloman, Scientific American, "Hubble Tension Headache: Clashing Measurements Make the Universe's Expansion a Lingering Mystery," 29 July 2019 Hidden in one of the darkest corners of the Orion constellation, this Cosmic Bat is spreading its hazy wings through interstellar space two thousand light-years away. Ashley Strickland, CNN, "Stunning spiral galaxy spotted by Hubble," 24 July 2019 Recently, Knox and her fiance, Christopher Robinson, created and shared their interstellar wedding website. Morgan Hines, USA TODAY, "Amanda Knox faces backlash for crowdfunding her wedding: 'I'm a figure to be demonized'," 24 July 2019 The idea of safe harbor out there in the universe—the home of aliens looking back at us, or perhaps an interstellar oasis for future humans—is endlessly alluring. Chris Gunn, National Geographic, "Dear James Webb Space Telescope: How you will show us the future," 23 July 2019 Skrillex's mastery of sound design is on full display as your ears explore interstellar synth swings, dynamic drum patterns and a fresh mix of ethereal melodies and ear-teasing textures. Kat Bein, Billboard, "Skrillex Drops Surprise Two-Song 'Show Tracks' EP: Listen," 19 July 2019

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

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First Known Use of interstellar

1626, in the meaning defined above

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Statistics for interstellar

Last Updated

18 Aug 2019

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Time Traveler for interstellar

The first known use of interstellar was in 1626

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More Definitions for interstellar



English Language Learners Definition of interstellar

: existing or occurring between stars


in·​ter·​stel·​lar | \ ˌin-tər-ˈste-lər How to pronounce interstellar (audio) \

Kids Definition of interstellar

: existing or taking place among the stars interstellar gases

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More from Merriam-Webster on interstellar

Rhyming Dictionary: Words that rhyme with interstellar

Thesaurus: All synonyms and antonyms for interstellar

Spanish Central: Translation of interstellar

Nglish: Translation of interstellar for Spanish Speakers

Comments on interstellar

What made you want to look up interstellar? Please tell us where you read or heard it (including the quote, if possible).


to move or obtain by small maneuvers

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