Definition

A layer of soil that remains frozen all year round, found mainly in very cold regions like the Arctic.

Example

The construction of the building was delayed due to the presence of permafrost beneath the site.

Conversation

Did you know that the permafrost in Alaska is melting at an alarming rate?

Really? I heard it could affect the entire ecosystem there.

Yeah, it’s concerning because it releases greenhouse gases too.

That’s true; climate change is such a complex issue.

Synonyms & Antonyms

Root Explanation

Permafrost is formed from "perma-" (from the Latin "permanere", meaning to remain or stay) and "frost" (from Old English "forst", meaning frozen or cold). The word describes ground that remains frozen for an extended period of time.

Memory Tip

Think of 'remaining' ('perma-') in a 'frozen' state ('frost') — that's what permafrost means.

Visually Confused Words