neon /'ni: Dn; 'nian/ n [U] colourless gas forming a very small proportion of the earth's atmosphere. 氣(一種無(wú)色氣體元素，在地球的大氣中所占比例極小)。 ~ light n coloured light produced when an electric current passes through this gas in a low-pressure bulb or tube. 霓虹光; 霓虹燈。 ~ sign n advertisement, etc in which ~ light is used. 寬虹燈廣吿。