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altimeter - 4 dictionary results

al⋅tim⋅e⋅ter

[al-tim-i-ter, al-tuh-mee-ter]
–noun
1. a sensitive aneroid barometer that is graduated and calibrated, used chiefly in aircraft for finding distance above sea level, terrain, or some other reference point by a comparison of air pressures.
2. any device used for the same purpose that operates by some other means, as by radio waves.

Origin:
1820–30; alti- + -meter
al·tim·e·ter   (āl-tĭm'ĭ-tər)   
n.  An instrument for determining elevation, especially an aneroid barometer used in aircraft that senses pressure changes accompanying changes in altitude.

[Latin altus, high; see al-2 in Indo-European roots + -meter.]
al'ti·met'ric (āl'tə-mět'rĭk) adj., al·tim'e·try n.

Altimeter

Al*tim"e*ter\, n. [LL. altimeter; altus high + metrum, Gr. ?, measure: cf. F. altim[`e]tre.] An instrument for taking altitudes, as a quadrant, sextant, etc. --Knight.
altimeter   (āl-tĭm'ĭ-tər)  Pronunciation Key 
An instrument that measures and indicates the height above sea level at which an object, such as an airplane, is located.
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