baroscope
/ˈbɛrəˌskoʊp/
noun
- An instrument that measures changes in air pressure, often used to predict weather.
- Our science teacher brought a baroscope to class to demonstrate how air pressure changes with altitude.
- The old baroscope in the library showed the pressure was dropping, so I grabbed an umbrella.
- Before modern barometers, sailors relied on a simple baroscope to forecast storms.
Synonyms