Definition

Relating to substances that are used to kill pests, especially insects or weeds.

Example

Farmers often use pesticidal sprays to protect their crops from harmful insects.

Conversation

Have you heard about the new pesticidal spray they released?

Yeah, I read that it's really effective for gardening.

I might try it out since my plants keep getting infested.

Sounds like a good idea! Just make sure to follow the instructions.

Synonyms & Antonyms

Root Explanation

Pesticidal → It is formed from "pestis" (meaning plague or pest) and "-cidal" (from Latin "caedere", meaning to kill). The word "pesticidal" refers to substances that kill pests or plagues.

Memory Tip

Think of 'pest' as something harmful and '-cidal' as meaning to kill — so pesticides are substances that kill harmful pests.

Visually Confused Words