interplanetary

[in-ter-plan-i-ter-ee]

adjective

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

interplanetary

/ ˌɪntəˈplænɪtərɪ, -trɪ /

adjective

1. of, relating to, or existing between planets

Word History and Origins

Origin of interplanetary¹

First recorded in 1685–95; inter- + planetary

Example Sentences

These transhumans are beta tests for extending the human lifespan, as noble an endeavor as prioritizing interplanetary travel.

From Salon

Two worlds colliding, as the 'America First' President was beamed in like a 30-foot interplanetary emperor, into the beating heart of the rules-based international economic order.

From BBC

Decades later and after several successful interplanetary missions, Isro’s budget remains modest.

From BBC

Fancies about interplanetary travel may have their sedulous followers, but skepticism about Musk’s Martian fantasy have been mounting.

From Los Angeles Times

“It’s an unexpected interplanetary fireworks show,” said Meg Schwamb, a planetary astronomer at Queen’s University Belfast.

From New York Times