manometer

American  

[muh-nom-i-ter] / məˈnɒm ɪ tər /

noun

1. an instrument for measuring the pressure of a fluid, consisting of a tube filled with a liquid, the level of the liquid being determined by the fluid pressure and the height of the liquid being indicated on a scale.

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manometer British  

/ ˌmænəʊˈmɛtrɪk, məˈnɒmɪtə /

noun

1. an instrument for comparing pressures; typically a glass U-tube containing mercury, in which pressure is indicated by the difference in levels in the two arms of the tube

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manometer Scientific  

/ mə-nŏm′ĭ-tər /

1. An instrument used to measure the pressure exerted by liquids and gases. Pressure is exerted on one end of a U-shaped tube partially filled with liquid; the liquid is displaced upwards on the other side of the tube by a distance proportional to the pressure difference on each side of the tube.

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Other Word Forms

• manometric
  adjective
• manometrical
  adjective
• manometrically
  adverb
• manometry
  noun

Etymology

Origin of manometer

1700–10; < French manomètre, equivalent to mano- (< Greek manós loose, rare, sparse) + -mètre -meter

Example Sentences

Why is it necessary to use a nonvolatile liquid in a barometer or manometer?

From Textbooks • Feb. 14, 2019

The pressure of a sample of gas is measured with an open-end manometer, partially shown to the right.

From Textbooks • Feb. 14, 2019

The density of the mercury fluid in the manometer is 13.6 times greater than water, so the height of the fluid will be 1/13.6 of that in a water manometer.

From Textbooks • Aug. 12, 2015

Figure 11.46 A water manometer used to measure pressure in the spinal fluid.

From Textbooks • Aug. 12, 2015

V. Basch later substituted a spring manometer for the mercury column.

From Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. by Warfield, Louis Marshall