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.

---

barograph British  

/ ˈbærəˌɡrɑːf, -ˌɡræf /

noun

1. meteorol a self-recording aneroid barometer

---

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.

---

Other Word Forms

• barographic
  adjective

Etymology

Origin of barograph

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

Example Sentences

See Examples For:

barograph

Then it was discovered that someone had neglected to install in his plane a barograph, necessary for official recognition of his flight.

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

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

From Time Magazine Archive

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

From Time Magazine Archive

Slowly down and across the white, faintly ruled paper wrapped about the revolving drum, I watched the long-shanked, awkward pen of the barograph in our Weather Bureau station at Galveston.

From The Boy with the U. S. Weather Men by Francis Rolt-Wheeler