| BAR | bariatrics; barometer, barometric; beta-adrenergic receptor |
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| aneroid | Containing no liquid; said of kind of barometer. Aneroid barometer, a barometer the action of which depends on the varying pressure of the atmosphere upon the elastic top of a metallic box (shaped like a watch) from which the air has been exhausted. An index shows the variation of pressure. Origin: Gr. Priv. + wet, moist: cf. F. Aneroide. Source: Websters Dictionary (01 Mar 1998) |
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| barometer | An instrument that measures the pressure of the atmosphere. (09 Oct 1997) |
| water barometer | <physics> A barometer in which the changes of atmospheric pressure are indicated by the motion of a column of water instead of mercury. It requires a column of water about thirty-three feet in height. Source: Websters Dictionary (01 Mar 1998) |
| aneroid barometer | a barometer that measures pressure without using fluids |
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