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  

/ ˌbærəˈɡræfɪk, 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

Next day he had the barograph but a quartering wind slowed him to 282 m.p,h.—.77 less than the necessary margin over the old record.

From Time Magazine Archive

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

From Time Magazine Archive

A logbook and barograph, still intact, showed that the balloon had climbed to 72,178 ft.�

From Time Magazine Archive

Later, properly equipped with a barograph, Barstow took off again.

From Time Magazine Archive

He demonstrated this at once, sending his craft sliding up another hill of air, until it reached an elevation of four hundred feet, as evidenced by the barograph.

From Tom Swift and His Air Glider, or Seeking the Platinum Treasure by Appleton, Victor [pseud.]