argon
noun /ˈɑːɡɒn/
/ˈɑːrɡɑːn/
[uncountable] (symbol Ar)
- a chemical element. Argon is a gas that does not react with anything and is used in electric lights.
氩 词源late 19th cent.: from Greek, neuter of argos ‘idle’, from a- ‘without’ + ergon ‘work’.