dilatometer
/ˌdaɪləˈtɑmɪtər/
noun
- An instrument used to measure changes in the volume or dimensions of a substance, especially as a result of temperature changes or chemical reactions.
- Modern dilatometers can detect even tiny expansions in materials used for building bridges.
- In the lab, the dilatometer recorded precise changes in the liquid's volume as the temperature rose.
- The scientist used a dilatometer to measure how much the metal rod expanded when heated.