Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: French
Origin: thermomètre, from Greek therme ( THERM) + French -mètre '-meter'

thermometer

noun
     
ther‧mom‧e‧ter [countable]
MHHEM a piece of equipment that measures the temperature of the air, of your body etc:
The thermometer registered over 100°C.
a candy/meat thermometer (=used in cooking)

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