Definition

A type of rock that is mostly made of calcium carbonate, often used in construction and to make lime and cement.

Example

The ancient castle was built using large blocks of limestone.

Conversation

Did you know that limestone is used in many buildings around here?

Really? I had no idea it was that common.

Yeah, it’s fascinating how they use limestone in construction.

I should pay more attention to the materials in the buildings.

Synonyms & Antonyms

Root Explanation

Limestone → It is formed from "lime" (from Old French *lime*, meaning the mineral calcium oxide) and "stone" (from Old English *stan*, meaning rock or stone). The word "limestone" refers to a type of rock primarily composed of calcium carbonate, which is derived from lime.

Memory Tip

Think of 'lime' as the mineral that makes up this rock, and 'stone' as the solid material. Together, they help you remember that limestone is a rock made primarily of lime.

Visually Confused Words