in·​ter·​plan·​e·​tary ˌin-tər-ˈpla-nə-ˌter-ē How to pronounce interplanetary (audio)
: existing, carried on, or operating between planets
interplanetary dust
an interplanetary flight
interplanetary spacecraft

Examples of interplanetary in a Sentence

Recent Examples on the Web Neither of those movies is long on wish fulfillment, which is kind of like having a superhero movie where people solve interplanetary crises by negotiating. Belinda Luscombe, TIME, 1 May 2024 That’s the main takeaway from the second installment of Zack Snyder’s interplanetary space saga that, depending on your perspective, either pays homage to or shamelessly rips off previous epics ranging from Seven Samurai to Star Wars. Frank Scheck, The Hollywood Reporter, 18 Apr. 2024 Join us for a live talk to learn how Ingenuity’s team used resourcefulness and creativity to transform the rotorcraft from a successful tech demo into a helpful scout for the Perseverance rover, ultimately proving the value of aerial exploration for future interplanetary missions. IEEE Spectrum, 29 Mar. 2024 Japanese researchers from Kyoto University have proposed an interplanetary transportation system — the Hexatrack — that would let people take a bullet train to the moon. William Gavin, Quartz, 19 Mar. 2024 In February 2022, NASA recommended that SpaceX prepare an analysis of launch window availability for the space station and interplanetary missions to ensure that Starlink would not significantly reduce access to space. IEEE Spectrum, 13 Mar. 2024 The films are based on Frank Herbert's sci-fi novel of the same name, which takes place in a future entrenched in interplanetary warfare. Stephanie Kaloi, Peoplemag, 28 Feb. 2024 And this time, instead of swinging back to Earth once again, humankind has an opportunity to launch itself deeper into the solar system, establishing us even more as a spacefaring, possibly interplanetary, species. Marina Koren, The Atlantic, 24 Feb. 2024 As science fiction goes, the film rewrote the rules, leading with revolutionary visuals and its equally striking sound design, to the extent that those elements took precedence over the plot: an interplanetary battle for the galaxy’s rarest resource. Peter Debruge, Variety, 21 Feb. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'interplanetary.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1691, in the meaning defined above

Time Traveler
The first known use of interplanetary was in 1691

Dictionary Entries Near interplanetary

Cite this Entry

“Interplanetary.” Dictionary, Merriam-Webster, Accessed 29 May. 2024.

Kids Definition


: between planets
interplanetary space
interplanetary travel

More from Merriam-Webster on interplanetary

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