Radon

Origin

Contraction of radium emanation, since the element appears in the radioactive decay of radium.

Full definition of radon

Noun

1. A radioactive chemical element (symbol Rn, formerly Ro) with atomic number 86, one of the noble gases.

Synonyms

• emanation obsolete
• exradio archaic
• niton obsolete

Derived terms

• eka-radon
• radon difluoride
• radon fluoride

Related terms

• radium

Anagrams

• adorn
• and/or
• andro
• NORAD