noun
- an instrument used to measure the specific gravity or density of liquids
Usage: scientific
Examples
- The winemaker used a hydrometer to check the sugar content of the grape juice.
- Scientists measured the saltwater’s density with a hydrometer.
- The hydrometer floated higher in the denser liquid.
- Battery acid concentration can be tested using a hydrometer.
- The lab technician calibrated the hydrometer before taking measurements.
- A hydrometer consists of a weighted glass bulb with a graduated stem.