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Definition of: barometer
Our photo definition of barometer 
(bə·rom′ə·tər) noun
1. An instrument for measuring atmospheric pressure: used for forecasting the weather, measuring elevations, etc.
2. Anything that indicates changes.
—bar·o·met·ric (bar′ ə·met′rik) or ·ri·cal adjective
—bar′o·met′ri·cal·ly adverb
—ba·rom′e·try noun
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