Definition of "barometric pressure" []

• Atmospheric pressure as indicated by a barometer (noun)

WordNet. Princeton University. 2010.

• "Doing it at an easy gradient and accustoming oneself to the lessened barometric pressure by slow degrees, there are no such dreadful symptoms."
• "An approaching low pressure system in the atmosphere would make the “glass fall,” i.e, the barometric pressure gauge a column of mercury in a thin glass tube dip to a low level, appropriately marked on the barometer’s face as “stormy weather.”"