Pesticide Definition, Usage & Key Differences

Meaning 1：insect-killing chemical (pesticide)

pesticide 🔊

/ˈpestɪsaɪd/

A chemical used to kill harmful insects or small animals that damage plants.

Pesticide application scene: farmer spraying crops with protective gear

insect-killing chemical 🔊

➕

/ˈɪnsekt ˈkɪlɪŋ ˈkemɪkəl/

A chemical substance used specifically to kill pests, especially insects, that harm cultivated plants or crops.

📁 Category：Botany Research 🔖 Level：Intermediate

📘 Details & Usage

📖 Root Explanation

From Latin 'pestis' (plague) + '-cide' (killer, from 'caedere' to kill). Literally 'a plague killer'.

💡 Mnemonic

Think: 'PESTS DIE inside' because of the pesticide.

📖 Example

The farmer carefully sprayed pesticide on the apple trees to protect the fruit from insects. 🔊 The farmer applied pest control chemicals carefully to the apple trees to safeguard the fruit from insect damage.

🔗 Collocations

spray pesticide – to apply pesticide in liquid form using a sprayer

apply pesticide – to put pesticide onto a surface or area

organic pesticide – a pesticide derived from natural sources

🔄 Synonyms

insecticide (n.) – A substance specifically used to kill insects.

herbicide (n.) – A substance used to destroy unwanted plants (weeds).

fungicide (n.) – A substance used to destroy fungi that cause plant disease.

🚫 Antonyms

fertilizer (n.) – A substance added to soil to enhance plant growth, not kill pests.

growth promoter (n.) – A substance that stimulates plant or organism growth.

🌱 Derivatives

pesticidal (adj.) – Having the qualities or effects of a pesticide.

📖 Cultural Story

The term emerged in the mid-20th century alongside the rise of synthetic chemicals in agriculture. It gained widespread public attention following Rachel Carson's 1962 book "Silent Spring," which exposed the environmental dangers of indiscriminate pesticide use.