radon

noun/ˈreɪdɒn/

Frequency rank: #14,521 of 20,003 in the WORDED list (wordfreq data)

Meaning

a radioactive noble gas produced by the decay of radium, occurring naturally in soil and rocks.

Illustration for the English word “radon”

Example sentence

The building inspector found dangerous levels of radon gas in the basement.

More words in ranks 14,501–14,600