barometer (noun) · barometers (plural noun)
See also: Barometer
The word "barometer" is derived from the Ancient Greek: βάρος, romanized: báros meaning " weight ", and Ancient Greek: μέτρον, romanized: métron meaning " measure ". History
A barometer is a device that measures atmospheric pressure. The word "barometer" comes from the Greek words for "weight" and "measure.". Changes in atmospheric pressure recorded by barometers are most often used in meteorology for forecasting weather.
Definition of barometer. 1 : an instrument for determining the pressure of the atmosphere and hence for assisting in forecasting weather and for determining altitude (see altitude sense 1a)
A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather. Numerous measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems, and frontal boundaries.