Definition

A chemical used to kill insects, often applied to the skin or clothing to treat conditions like lice and scabies.

Example

The doctor recommended using permethrin to eliminate the lice infestation.

Conversation

Have you ever heard of permethrin?

Yeah, I think it's used for treating lice and stuff, right?

Exactly! I used it recently when my daughter got head lice.

That's good to know. I might need to keep some around just in case.

Synonyms & Antonyms

Root Explanation

Permethrin is a synthetic chemical derived from pyrethrin, which comes from the chrysanthemum flower. The prefix 'per-' (meaning through) and 'methrin' (derived from 'methanol' and 'pyrethrin') indicate its chemical structure and function as an insecticide. The word essentially refers to a compound that acts through the properties of pyrethrin.

Memory Tip

Think of 'per-' meaning through, and 'methrin' relating to its chemical origins from pyrethrin. This helps you remember that permethrin is a compound that acts through the properties of a natural insecticide.

Visually Confused Words