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pres·sure-tube anemometer(prĕsh′ər-to͞ob′, -tyo͞ob′)
Any of various pressure anemometers that measure wind speed by registering the displacement of liquid in a U-shaped tube that has one end exposed to the wind.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.