Definition

A hormone produced by the pineal gland that helps control sleep patterns and is released in response to darkness.

Example

Many people take melatonin supplements to help them sleep better at night.

Conversation

Have you ever tried taking melatonin to help you sleep?

I have! It really helped me fall asleep faster.

That's good to know, I might give melatonin a shot tonight.

Just make sure to follow the dosage; it works wonders!

Synonyms & Antonyms

Root Explanation

Melatonin is formed from "melas" (from Greek, meaning black) and "tonin" (derived from the suffix used in biochemistry to denote substances related to tone or tension). The word refers to a substance that is associated with the regulation of sleep and is often linked to the dark or night due to its production in response to darkness.

Memory Tip

Think of 'melas' meaning 'black' to remember that melatonin is related to the night and sleep.

Visually Confused Words