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| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| the offspring of a zebra and a donkey. |
| barograph (bār'ə-grāf') Pronunciation Key
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. |