Meaning & use
alcohol thermometer
A thermometer that uses colored alcohol instead of mercury to measure temperature as it expands and contracts.
See it in a sentence
The science teacher used an alcohol thermometer because it is safer than a mercury one.
An alcohol thermometer can measure much lower temperatures than a standard mercury thermometer.
A note on using this word
Alcohol thermometers are preferred for very cold conditions and safety, since ethanol stays liquid at much lower temperatures than mercury.
Words with a similar meaning
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