Definition of "neon" []

• A rare, inert gaseous element occurring in the atmosphere to the extent of 18 parts per million and obtained by fractional distillation of liquid air. It is colorless but glows reddish orange in an electric discharge and is used in display and television tubes. Atomic number 10; atomic weight 20.180; melting point -248.67°C; boiling point -245.95°C. See Table at element. (noun)
• A neon tetra. (noun)
• An extremely bright color. (noun)
• Extremely bright or vivid; fluorescent: neon purple. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The metaphorical way you use the phrase 'neon sign' is for something unmissable, like, 'What do you need, a neon sign?'"
• "As CVPCS says, If you see the word neon on the Features line, then your device supports NEON extensions."
• "The sign is hand painted and below it, in neon, reads two words: “Bar Restaurant” – need we say more?"