- an instrument for measuring temperature, often a sealed glass tube that contains a column of liquid, as mercury, that expands and contracts, or rises and falls, with temperature changes, the temperature being read where the top of the column coincides with a calibrated scale marked on the tube or its frame.
Origin of thermometer
Examples from the Web for thermometric
Historical Examples of thermometric
In any case it is necessary to define a thermometric unit of class .
De Fonvielle has made with it a new determination of the sun's thermometric power.The Galaxy
It makes up some thirty-four quarto pages of Smyth's edition of Franklin's works, exclusive of the thermometric notes.Benjamin Franklin; Self-Revealed, Volume II (of 2)
Wiliam Cabell Bruce
The hour of the day appears to be indifferent, since there exists no thermometric diurnal variation in the strata of the surface.
No series of thermometric observations worthy of confidence extend further back, in the United States, than seventy-eight years.
- An instrument for measuring temperature.
- An instrument used to measure temperature. There are many types of thermometers; the most common consist of a closed, graduated glass tube in which a liquid expands or contracts as the temperature increases or decreases. Other types of thermometers work by detecting changes in the volume or pressure of an enclosed gas or by registering thermoelectric changes in a conductor (such as a thermistor or thermocouple).