Definition

A small celestial body that orbits the sun, similar to an asteroid, but often larger than a meteoroid.

Example

Scientists discovered a new planetoid in the outer reaches of the solar system.

Conversation

Did you hear about the new planetoid they discovered recently?

Yeah, I read something about it! It's fascinating how many there are in our solar system.

I wonder how they even find these tiny planetoids among all the stars.

It must take a lot of advanced technology and patience to spot them.

Synonyms & Antonyms

Root Explanation

Planetoid → It is formed from "planeta" (from Greek "planētēs", meaning wanderer) and "-oid" (meaning resembling or like). The word "planetoid" refers to something that resembles a planet or is planet-like.

Memory Tip

Think of 'wanderer' ('planeta') to remember that a 'planetoid' is something that resembles a planet.

Visually Confused Words