Definition

A type of volcanic glass that expands when heated, used in construction and gardening as a lightweight material.

Example

Perlite is often added to potting soil to improve drainage and aeration.

Conversation

Have you ever used perlite in your garden projects?

Yeah, I love how it helps with drainage in the soil.

I want to try it for my potted plants this summer.

Definitely do it! It really makes a difference.

Synonyms & Antonyms

Root Explanation

Perlite is derived from the French word 'perlite', which comes from 'perle' (meaning pearl) due to its pearly luster when heated. The suffix '-ite' is often used in mineralogy to denote a mineral or rock type. Thus, perlite refers to a volcanic glass that has a pearly appearance.

Memory Tip

Imagine a shiny 'pearl' ('perle') when you think of perlite, as it has a similar luster and is a type of volcanic glass.

Visually Confused Words