#mercury_thermometer__mercurythermometer__mercury-in-glass_thermometer  thermometer consisting of mercury contained in a bulb at the bottom of a graduated sealed glass capillary tube marked in degrees Celsius or Fahrenheit; mercury expands with a rise in temperature causing a thin thread of mercury to rise in the tube
  supertype:  thermometer  measuring instrument for measuring temperature
  subtype:  Beckman_thermometer  mercury-in-glass_clinical_thermometer
  part:  bulb.part  a rounded part of a cylindrical instrument (usually at one end); "the bulb of a syringe"

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