Chemistry . a chemically inert gaseous element occurring in small amounts in the earth's atmosphere, used chiefly in a type of electrical lamp. Symbol: Ne; atomic weight: 20.183; atomic number: 10; density

0.9002 g/l at 0?C and 760 mm pressure.

neon lamp.

a sign or advertising sign formed from neon lamps.

using or containing the gas neon.

made of or formed by a neon lamp or lamps

a neon sign.

of, pertaining to, or characteristic of a tawdry urban district or of gaudy nighttime entertainment.