radon
|ra-don|
C1
/ˈreɪˌdɒn/
radioactive noble gas
Etymology
Etymology Information
'radon' originates from the element 'radium', specifically the word 'radium emanation', where 'emanation' meant 'to flow out'.
Historical Evolution
'radium emanation' was shortened to 'radon' in the early 20th century, and eventually became the modern English word 'radon'.
Meaning Changes
Initially, it referred to the emanation from radium, but over time it evolved into its current meaning of a distinct noble gas.
Meanings by Part of Speech
Noun 1
a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as a decay product of radium.
Radon is often found in basements and can pose health risks.
Last updated: 2025/05/07 00:09