mercury

/ˈmər-kyə-rē/

Latin Mercurius, Roman god and the planet

noun

  1. a Roman god of commerce, eloquence, travel, cunning, and theft who serves as messenger to the other gods

  2. a bearer of messages or news or a conductor of travelers

  3. a silver-white poisonous heavy metallic element that is liquid at ordinary temperatures and is used especially in batteries, in dental amalgam, and in scientific instruments —called also quicksilver

noun

  1. a chloride of mercury: such as

  2. calomel

  3. mercuric chloride

noun

  1. an electric lamp in which the discharge takes place through mercury vapor —called also mercury lamp