| 单词 | neon |
| 释义 | Word Frequency neon(ˈniːɒn) noun 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 Word origin C19: via New Latin from Greek neon new |
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