|1.||a colourless odourless rare gaseous element, an inert gas occurring in trace amounts in the atmosphere: used in illuminated signs and lights. Symbol: Ne; atomic no: 10; atomic wt: 20.1797; valency: 0; density: 0.899 90 kg/m³; melting pt: --248.59°C; boiling pt: --246.08°C|
|2.||(modifier) of or illuminated by neon or neon lamps: neon sign|
|[C19: via New Latin from Greek neon new]|
neon ne·on (nē'ŏn')
A rare inert colorless gaseous element that occurs in air and glows reddish orange in an electric discharge. Atomic number 10; atomic weight 20.180; melting point -248.59°C; boiling point -246.08°C.
|neon (nē'ŏn') Pronunciation Key
A rare colorless element in the noble gas group that occurs naturally in extremely small amounts in the atmosphere. It glows reddish orange when electricity passes through it, as in a tube in an electric neon light. Neon is also used for refrigeration. Atomic number 10; atomic weight 20.180; melting point -248.67°C; boiling point -245.95°C. See Periodic Table.