# argon

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chlorine${\displaystyle \longleftarrow }$ 18 ${\displaystyle \longrightarrow }$potassium another form kalium

### Pronunciation

• Hyphenation: ar‧gon
•  Audio (US) (file)

## Noun

 Plural none
1. (uncountable) A chemical element (symbol Ar) with an atomic number of 18.
2. Argon is a gas, often used in light bulbs to change the colour of the light.