An instrument for indicating changes in temperature of a substance, without accurately measuring them, by observing the accompanying changes in volume.
The definition of a thermoscope is an instrument that shows changes in the temperature of a substance by noting changes in the volume of the substance.
An example of a thermoscope is a tool for measuring the temperature of water by seeing how the water's volume decreases and increases.
An example of a thermoscope is a thermometer without a numerical scale.
Origin of thermoscope
- thermo- +"Ž -scope