'mercury-in-glass thermometer' definitions:
Definition of 'mercury-in-glass thermometer'
(from WordNet)
noun
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 [syn: mercury thermometer, mercury- in-glass thermometer]