Have you ever seen the organic produce or green products sections in a grocery store? Most people who buy organic produce and green products like them because they are non-toxic. That means they are not harmful to the environment.

If you saw the words non-toxic on a product, you would know that product is likely a good product just because the word non-toxic contains the prefix non-.

A prefix is a word or group of letters that is placed at the beginning of a word. It changes the meaning of the word and clues you in to what the word means.

The prefix non- means not. So if you saw the words non-toxic on a product, you'd know that meant the product was not toxic. If it just said "toxic" without the prefix non-, you'd know to steer clear of it.

Watch the video below to learn more words that contain the prefix non-.