Definition of neon noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈniːɒn//
; NAmE NAmE//ˈniːɑːn//
[uncountable] (symbol Ne)
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a chemical element. Neon is a gas that does not react with anything and that shines with a bright light when electricity is passed through it. neon lights/signs Word Originlate 19th cent.: from Greek, literally ‘something new’, neuter of the adjective neos.
See the Oxford Advanced American Dictionary entry: neon