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1. An instrument for measuring atmospheric pressure, used especially in weather forecasting.
2. Something that registers or responds to fluctuations; an indicator: Opinion polls serve as a barometer of the public mood.

bar′o·met′ric (băr′ə-mĕt′rĭk), bar′o·met′ri·cal adj.
bar′o·met′ri·cal·ly adv.
ba·rom′e·try n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.barometrical - relating to atmospheric pressure or indicated by a barometerbarometrical - relating to atmospheric pressure or indicated by a barometer; "barometric pressure"
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The wind was then blowing from the south-west in the mild degree which in barometrical language is ranked `No.
There are no indications of any great change in the barometrical situation.
Representing an obstacle to the worldwide free space optics market is the ecological obstruction or barometrical consideration influencing the flag quality.