Definition

Relating to or happening between different planets in space.

Example

The scientists are studying interplanetary travel to explore other worlds.

Conversation

Did you hear about the new interplanetary mission they just announced?

Yeah, it's exciting to think about travel between planets!

I wonder what kind of technology they'll use for those interplanetary journeys.

Me too! It could change everything we know about space exploration.

Synonyms & Antonyms

Root Explanation

Interplanetary → It is formed from "inter-" (meaning between) and "planetary" (from Latin "planeta" meaning wanderer, referring to celestial bodies). The word "interplanetary" describes something that exists or occurs between planets.

Memory Tip

Think of things that exist "between" ('inter-') different "wanderers" ('planeta') in space — that's what interplanetary means.

Visually Confused Words