乙炔灯 yǐquēdēng acetylene lamp Origin Definitions Defs Strokes Stroke Words Sentences Sents 乙炔 yǐquē acetylene A colorless, flammable gas used as a fuel for welding and lighting, or as a chemical building block; also called 电石气 diànshíqì.灯 燈 dēng noun lamp lamp; lantern; light; any device used for illumination