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|part of speech:
||a chemical element that has eighty protons in each nucleus and that occurs as a dense silvery liquid at room temperature, used in thermometers, electrical devices, and reflecting surfaces, and as a catalyst; quicksilver. (symbol: Hg).
||any of a variety of compounds containing salts of mercury, used as pesticides and formerly as antiseptics.
||(cap.) in Roman mythology, the messenger of the gods; Hermes.
||(cap.) the eighth largest planet of the solar system and the nearest to the sun, having no satellites and a diameter of about 3,000 miles.
||temperature, as represented by the height of the mercury column in a thermometer.