noun. ['ˈreɪˌdɑːn'] a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health.
- atomic number 86
- inert gas
- chemical element
Rhymes with Radon
How do you pronounce radon?
Pronounce radon as ˈreɪˌdɑn.
US - How to pronounce radon in American English
UK - How to pronounce radon in British English
Sentences with radon
1. Noun, singular or mass
Understanding the nature of radon and how to test for it can make your home a safer place.
This testing will give you a radon concentration in units of picoCuries per liter of air (pCi/L).
3. Verb, base form
The uranium slowly decays, and radon gas is a byproduct of that decay.