radon
noun
Meaning
- nounThe chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas. An atom of this element.
- nounAn atom of this element.
- nounRadon-222 (22286Rn), the most stable isotope of said element.
Source: Wiktionary (CC BY-SA 4.0)
Five-letter puzzle facts
- How common
- Common
- #1,799 of 8,600 five-letter words by how often they're used
- Can be a Play Five answer
- As a first guess
- Tests likely letters better than 80% of common five-letter words.
- Vowels: 2 · Different letters: 5 · Repeated letters: None