neonnoun [ U ]
uk/ˈniː.ɒn/us/ˈniː.ɑːn/symbol Nea chemical element that is a gas with no smell or colour, does not react with other chemicals, and shines red when an electric current goes through it:
a neon light/sign
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Chemical elements
- alkali metal
- antimony
- calcium
- carbonic
- carbonic acid
- cesium
- cl
- graphene
- lithium
- nickel
- plutonium
- quicksilver
- selenium
- strontium
- sulphur
- transition metal
- urea
- vanadium
- xenon
- zinc
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