radon

Plural: radons

Noun

A radioactive, colorless, odorless noble gas.
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
The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.
Radon-222 (²²²₈₆Rn), the most stable isotope of said element.

Examples

Finding RADON on his rack was a silent, but deadly, high-scoring word.

Origin / Etymology

Contraction of radium emanation, since the element appears in the radioactive decay of radium. By surface analysis, radio- + -on (“suffix for noble gases”).

Synonyms

atomic number 86, Rn, emanation, exradio, niton, radeon, radium emanation

Scrabble Score: 6

radon: valid Scrabble (US) TWL Word
radon: valid Scrabble Word in Merriam-Webster MW Dictionary
radon: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 7

radon: valid Words With Friends Word