Thermometer Definition
 thər-mŏmĭ-tər 
  thermometers
  
    noun
  
 An instrument for measuring temperatures, consisting of a graduated glass tube with a sealed, capillary bore in which mercury, colored alcohol, etc. rises or falls as it expands or contracts with changes in temperature.
 Webster's New World 
Any similar instrument, as one operating by means of a thermocouple.
 Webster's New World 
An apparatus used to measure temperature.
Wiktionary 
Synonyms: 
  
- thermo-regulator;
- thermostat
- telethermometer
- thermoscope
- thermoelectric
- resistance thermometer
- clinical thermometer
- anal thermometer
- oral thermometer
- calorimeter
- mercury
- regulator
- instrument
- indicator
Other Word Forms of Thermometer
Noun
Singular:
 thermometerPlural:
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