NEON

n. inert odorless gas that gives a red glow in a vacuum and occurs in small amounts in the air (Chemistry)

Neon (IPA: ) is the chemical element that has the symbol Ne and atomic number 10. A very common element in the universe, it is rare on Earth. A colorless, inert noble gas under standard conditions, neon gives a distinct reddish glow when used in vacuum discharge tubes and neon lamps. It is commercially extracted from air, in which it is found in trace amounts.
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Noun
1. a colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amounts
(synonym) Ne, atomic number 10
(hypernym) chemical element, element
(substance-holonym) air

n. Ne, neon, chemical element, inert odorless gas that gives a red glow in a vacuum and occurs in small amounts in the air (Chemistry)

n. neon, inert odorless gas that gives a red glow in a vacuum and occurs in small amounts in the air (Chemistry)