Barograph Definition

bărə-grăf
noun
A recording barometer.
American Heritage
A barometer that records changes in atmospheric pressure on a revolving cylinder.
Webster's New World

A type of barometer that continuously records air pressure on a sheet or rotating drum.

Wiktionary
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other
An instrument that continuously records changes in atmospheric pressure. A barograph typically consists of an aneroid barometer connected to a pen; the pen is in contact with a piece of paper mounted on a cylinder that rotates once on a daily or weekly basis. As the atmospheric pressure changes, the pen is displaced in proportion to the change, thus a record of the pressure is traced onto the rotating sheet of paper.
American Heritage Science
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Other Word Forms of Barograph

Noun

Singular:
barograph
Plural:
barographs

Origin of Barograph

  • baro- +‎ -graph

    From Wiktionary

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