The column of mercury found in instruments like thermometers that expands or contracts to indicate a reading; also known as [[汞柱|汞柱|gong4 zhu4]].

A lamp that produces strong light by passing an electric current through mercury vapor; used for street lighting and film sets. Also called a [[汞灯|汞燈|gong3 deng1]].

millimeter of mercury (mmHg); unit of pressure equivalent to approximately 133.32 pascals or one torr