interstellar

adjective

in·​ter·​stel·​lar ˌin-tər-ˈste-lər How to pronounce interstellar (audio)
Synonyms of interstellarnext
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In recent months, multiple space agencies and observatories have turned their attention to this interstellar visitor. Daisy Dobrijevic, Space.com, 15 Dec. 2025 Two years later, an interstellar comet was spotted by a Crimean amateur astronomer. CBS News, 15 Dec. 2025 Unlike comets bound to the sun's gravity, 3I/ATLAS is traveling on a hyperbolic orbit that will eventually carry it out of the solar system and back into interstellar space. Eric Lagatta, AZCentral.com, 13 Dec. 2025 The Perseverance rover on Mars' surface also snapped a faint photo of the interstellar comet. Eric Lagatta, USA Today, 12 Dec. 2025 See All Example Sentences for interstellar

Word History

First Known Use

1626, in the meaning defined above

Time Traveler
The first known use of interstellar was in 1626

Browse Nearby Words

Cite this Entry

“Interstellar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/interstellar. Accessed 18 Dec. 2025.

Kids Definition

interstellar

adjective
in·​ter·​stel·​lar ˌint-ər-ˈstel-ər How to pronounce interstellar (audio)
: located or taking place among the stars
interstellar space

More from Merriam-Webster on interstellar

Last Updated: - Updated example sentences
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