1. instruments used to measure the specific gravity or density of liquids
Usage: scientific; plural of hydrometer

Examples

• The winemaker used hydrometers to test the sugar content of the grape juice.
• Laboratory technicians calibrated the hydrometers before conducting the experiments.
• Hydrometers are essential tools in brewing beer and making wine.
• The chemistry students learned how to read hydrometers accurately.
• Different types of hydrometers are designed for specific liquid ranges.
• The distillery kept several hydrometers for testing alcohol content.