thermometer - measuring instrument for measuring temperaturealcohol thermometer, alcohol-in-glass thermometer - thermometer consisting of a glass capillary tube marked with degrees Celsius or Fahrenheit and containing alcohol which rises or falls as it expands or contracts with changes in temperature candy thermometer - a thermometer used to determine the temperature of candy syrups during cooking cryometer - a thermometer designed to measure low temperatures meat thermometer - a thermometer that is inserted into the center of a roast (with the top away from the heat source); used to measure how well done the meat is mercury thermometer, 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 pyrometer - a thermometer designed to measure high temperatures telethermometer - a thermometer that registers the temperature at some distant point thermocouple, thermocouple junction - a kind of thermometer consisting of two wires of different metals that are joined at both ends; one junction is at the temperature to be measured and the other is held at a fixed lower temperature; the current generated in the circuit is proportional to the temperature difference thermopile - a kind of thermometer for measuring heat radiation; consists of several thermocouple junctions in series wet-bulb thermometer - a thermometer with a bulb that is covered with moist muslin; used in a psychrometer to measure humidity |