This meaning refers to the inert gaseous element with atomic number 10.
Neon is present in very small amounts in the atmosphere.
The tube was filled with neon gas.
This meaning refers to vivid electric lighting produced in sealed gas-filled tubes.
The restaurant sign glowed in neon.
Neon illuminated the street at night.
As an adjective, neon describes a color or object that is unusually vivid and bright.
He wore neon shoes.
The cyclists used neon safety vests.