radon

noun
rā'dŏn

The chemical element (symbol , formerly ) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.

Other meanings

Radon-222 (), the most stable of said element.

Related words

nonradon
radonate
radonproof
eka-radon
radon difluoride
radon fluoride
radoniferous
radon seed

Where this comes from

This definition is adapted from “radon” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.