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interplanetary

American  
[in-ter-plan-i-ter-ee] / ˌɪn tərˈplæn ɪˌtɛr i /

adjective

  1. being or occurring between the planets or between a planet and the sun.


interplanetary British  
/ ˌɪntəˈplænɪtərɪ, -trɪ /

adjective

  1. of, relating to, or existing between planets

"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 interplanetary

First recorded in 1685–95; inter- + planetary


Vocabulary lists containing interplanetary

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:

If there’s a path to transhumanism, which makes possible realization of otherwise unrealizable goals, such as survival of the species and an interplanetary future, it also starts here.

From The Wall Street Journal ● Oct. 2, 2026

The military’s reasoning was that leaking some of the information about these interplanetary conflicts might reduce the shock to the public the day the real revelations came.

From Slate ● Sep. 22, 2026

In order to efficiently scale its satellite launches, orbital data centers and interplanetary travel ambitions, SpaceX needs to develop a fully reusable spacecraft.

From MarketWatch ● Jun. 6, 2026

"But Nandini's sari is the first object I have collected from India for our interplanetary science collection and it's our very first sari," Shindell says.

From BBC ● Jun. 5, 2026

To communicate with other civilizations, we require a method adequate not merely for interplanetary distances but for interstellar distances.

From "Cosmos" by Carl Sagan

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