from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A scientific instrument that measures the changes in temperature.
from the GNU version of the Collaborative International Dictionary of English
- n. An instrument for indicating changes of temperature without indicating the degree of heat by which it is affected; especially, an instrument contrived by Count Rumford which, as modified by Professor Leslie, was afterward called the differential thermometer.
from The Century Dictionary and Cyclopedia
- n. An instrument or a device for indicating variations in temperature without measuring their amount.
thermo- + -scope (Wiktionary)