barograph

American  

[bar-uh-graf, -grahf] / ˈbær əˌgræf, -ˌgrɑf /

noun

1. any of several automatic recording barometers, of which the most common is the aneroid barograph.

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barograph British  

/ ˌbærəˈɡræfɪk, ˈbærəˌɡrɑːf, -ˌɡræf /

noun

1. meteorol a self-recording aneroid barometer

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barograph Scientific  

/ băr′ə-grăf′ /

1. 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.

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Other Word Forms

• barographic adjective

Etymology

Origin of barograph

First recorded in 1860–65; baro- + -graph

Example Sentences

He also thought his barograph would show a new U. S. altitude mark of 5,000 ft. or more.

From Time Magazine Archive

He will have to send the record from his sealed barograph home to Switzerland for any official recognition.

From Time Magazine Archive

The needle of the glider's sealed barograph reached its limit at 27,000 ft.

From Time Magazine Archive

This causes a sudden rise of barometric pressure that shows as a sharp jog on the chart of a specially sensitive barograph.

From Time Magazine Archive

It is claimed for the "A. G." barograph that it is the most precise instrument of its kind.

From The Mastery of the Air by Claxton, William J.