Definition

Relating to or having the qualities of a type of volcanic rock that is light and porous.

Example

The pumiceous texture of the stone made it ideal for use in lightweight construction materials.

Conversation

I found this really cool stone at the beach yesterday.

Oh, what does it look like?

It's quite pumiceous and really light!

That sounds interesting! I’d love to see it.

Synonyms & Antonyms

Root Explanation

Pumiceous → It is formed from "pumex" (Latin, meaning pumice stone) and the suffix "-ous" (meaning full of or possessing). The word "pumiceous" describes something that is full of or resembles pumice stone, which is a light, porous volcanic rock.

Memory Tip

Think of pumice stone, which is light and full of holes, to remember that pumiceous means resembling or full of pumice.

Visually Confused Words