Definition

A chemical substance that is used to kill unwanted animals or plants, especially insects that harm crops.

Example

Farmers often use pesticide to protect their crops from insects.

Conversation

Have you heard about the new pesticide they released for gardens?

Yeah, I read it’s supposed to be really effective against aphids.

I wonder if it's safe for pets, though.

Good point! We should look for a pet-friendly option.

Synonyms & Antonyms

Root Explanation

Pesticide → It is formed from "pestis" (from Latin, meaning plague or pest) and "-cide" (from Latin "caedere", meaning to kill). The word "pesticide" refers to a substance used to kill pests or organisms that are harmful to crops or livestock.

Memory Tip

Think of 'pest' as something harmful and '-cide' meaning to kill — that's why a pesticide is something that kills harmful pests.

Visually Confused Words