Definition

Relating to the outer layer or surface of a planet, especially the earth or the moon.

Example

The crustal movements can lead to earthquakes and volcanic activity.

Conversation

Did you know that the Earth's crustal layer is really thin compared to the layers below?

Yeah, I read that it’s only about 30 kilometers deep on average.

It's fascinating how much is going on beneath us in the crustal layers.

Absolutely! It’s amazing to think about how geology affects our planet.

Synonyms & Antonyms

Root Explanation

Crustal is formed from "crust" (from Latin *crusta*, meaning shell or outer layer) and "-al" (meaning pertaining to). The word "crustal" refers to something that pertains to the outer layer of the Earth, specifically the crust.

Memory Tip

Think of the word 'crust' as the outer layer of something, like a pie, and remember that 'crustal' means related to that outer layer.

Visually Confused Words