An alcohol thermometer is an instrument that is used to measure temperature by making use of the expansion of a liquid called alcohol. It is typically used in laboratory settings and is known for its precision. Some synonyms for an alcohol thermometer include spirit thermometer, alcohol-filled thermometer, and mercury-free thermometer. Other terms that can be used to describe this type of thermometer include glass bulb thermometer, liquid expansion thermometer, and bulb and stem thermometer. These synonyms are often used interchangeably to describe an instrument that serves the same purpose as the alcohol thermometer. Regardless of the terminology used, the alcohol thermometer remains an important tool in temperature measurement.