What does barometer mean?
A scientific instrument used to measure atmospheric pressure, typically in the form of a mercury column or an electronic display. A barometer can be used to predict weather patterns, such as changes in air pressure that may indicate an approaching storm.
Example
"The meteorologist used a barometer to predict the low-pressure system that was moving into the area."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.