Definition

The process by which certain elements or isotopes release energy in the form of radiation due to changes in their atomic structure.

Example

Scientists study radioactivity to understand how it affects the environment and human health.

Conversation

Have you heard about the dangers of radioactivity in certain areas?

Yeah, it's pretty concerning, especially near old nuclear plants.

I read that even small amounts of radioactivity can be harmful over time.

Absolutely, that's why it's important to monitor those places closely.

Synonyms & Antonyms

Root Explanation

Radioactivity → It is formed from "radio-" (from Latin *radius*, meaning ray) and "activity" (from Latin *activitas*, meaning the quality of being active). The word describes the quality of emitting rays or particles as a result of nuclear reactions.

Memory Tip

Think of 'rays' ('radio-') being emitted due to 'activity' in the nucleus — that's what radioactivity means.

Visually Confused Words