ba·rom·e·ter (bə-rŏm'ĭ-tər)
n.

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.

barometric bar'o·met'ric (băr'ə-mĕt'rĭk) or bar'o·met'ri·cal adj.
barometrically bar'o·met'ri·cal·ly adv.
barometry ba·rom'e·try n.

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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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