Definition

A planet that orbits a star outside of our solar system.

Example

Astronomers have discovered several new exoplanets in recent years.

Conversation

Did you hear about the new exoplanet they discovered?

Yeah, I read that it's in a habitable zone!

I wonder what it would be like to live on an exoplanet.

It would be amazing, but we still have a lot to learn about them.

Synonyms & Antonyms

Root Explanation

Exoplanet → It is formed from "exo-" (from Greek "ἔξω", meaning outside) and "planet" (from Greek "πλανήτης", meaning wanderer). The word "exoplanet" refers to a planet that exists outside our solar system, literally meaning an outside wanderer.

Memory Tip

Think of 'exo-' meaning 'outside' and 'planet' meaning 'wanderer' — this helps you remember that an exoplanet is a planet that wanders outside our solar system.

Visually Confused Words