Definition

A type of rock made from volcanic ash that has been compacted together, which can range in size from fine sand to larger gravel pieces.

Example

The geologist explained that tuff is often found in areas with past volcanic activity.

Conversation

Have you ever seen a piece of tuff up close?

No, I haven't! What does it look like?

It's pretty interesting — it has a rough texture and comes in different colors.

That sounds cool! I’d love to check it out sometime.

Synonyms & Antonyms

Root Explanation

The word 'tuff' originates from the Italian word 'tufo', meaning a type of porous volcanic rock. It refers specifically to a lightweight rock formed from volcanic ash and debris.

Memory Tip

Think of the Italian word 'tufo' for a lightweight volcanic rock — this helps you remember that 'tuff' refers to a similar type of rock.

Visually Confused Words