Definition

A chemical substance that was used as a pesticide and is known to be very harmful to humans and animals, often appearing as a white or tan powder.

Example

Heptachlor was banned in many countries due to its dangerous effects on health and the environment.

Conversation

Have you heard about heptachlor?

Yeah, I read it was used as a pesticide a long time ago.

It's scary how toxic it can be to humans, right?

Definitely! I can't believe they used to spray it around so freely.

Synonyms & Antonyms

Root Explanation

Heptachlor is formed from "hepta-" (from Greek 'hepta', meaning seven) and "chlor" (from Greek 'chloros', meaning green or pale green, often used to refer to chlorine). The word refers to a chemical compound that contains seven chlorine atoms.

Memory Tip

Think of 'hepta-' meaning seven, and 'chlor' relating to chlorine — this helps you remember that heptachlor is a compound with seven chlorine atoms.

Visually Confused Words