Definition

A type of insecticide made from the dried flowers of certain chrysanthemums, used to kill insects.

Example

Farmers often use pyrethrum to protect their crops from pests.

Conversation

Have you ever tried using pyrethrum in your garden?

No, I haven't, but I've heard it's a natural insecticide.

Yeah, it's made from chrysanthemum flowers, so it's safe for plants.

That sounds great! I might look into it for my vegetables.

Synonyms & Antonyms

Root Explanation

Pyrethrum comes from the Greek word "purithron" (meaning a plant used for insect repellent) and the suffix "-um" (a Latin neuter suffix used in scientific nomenclature). The word refers to a type of flower known for its insecticidal properties, particularly in the context of pest control.

Memory Tip

Think of the Greek word for a plant used to repel insects, which helps you remember that pyrethrum is a flower known for its ability to keep pests away.

Visually Confused Words