Definition of Radon:

  1. The chemical element of atomic number 86, a rare radioactive gas belonging to the noble gas series.

  2. Naturally occurring colorless, odorless, and chemically inert but radioactive gas present (in varying amounts) in all soils and groundwater, and which occurs due to decay of uranium atoms over time. It enters homes through cracks and opening in concrete slabs and pores in hollow concrete blocks. Although exposure to radon produces no immediate symptoms, it is classified as a known carcinogen by the US Environmental Protection Agency (EPA).

How to use Radon in a sentence?

  1. The ground in some parts of the country releases radon, a radioactive gas that can cause cancer.

Meaning of Radon & Radon Definition