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radon

Line breaks: radon
Pronunciation: /ˈreɪdɒn
 
/

Definition of radon in English:

noun

[mass noun]
The chemical element of atomic number 86, a rare radioactive gas belonging to the noble gas series. (Symbol: Rn)
Example sentences
  • The ground in some parts of the country releases radon, a radioactive gas that can cause cancer.
  • A review of over 11 studies in uranium miners attributed an observed increase in lung cancer to radon and its progeny and not to uranium.
  • As the pressure in a building is slightly lower than the pressure outdoors, radon will be drawn from the ground into the building.

Origin

early 20th century: from radium, on the pattern of argon.

Definition of radon in:

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Word of the day orthoepy
Pronunciation: ˈɔːθəʊɛpi
noun
the correct or accepted pronunciation of words