What is the meaning of Radon?

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

Radon-222 (86Rn), the most stable isotope of said element.

radon

radon

radon

radon

radon

radon

accusative singular of rado

radon

radon

radon

radon

radon (chemical element)

radon

Rōmaji transcription of ラドン

radon

radon (chemical element)

radon (chemical element)

radon (chemical element (symbol Rn, formerly Ro) with atomic number 86; a colorless, odorless, chemically inert but radioactive noble gas)

radon

radon

radon

radon

radon

radon

Source: wiktionary.org