[ al-tim-i-ter, al-tuh-mee-ter ]


  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.


/ ˈæltɪˌmiːtə; ælˈtɪmɪtə /


  1. an instrument that indicates height above sea level, esp one based on an aneroid barometer and fitted to an aircraft


/ ăl-tĭmĭ-tər /

  1. 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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Word History and Origins

Origin of altimeter1

First recorded in 1820–30; alti- + -meter

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Example Sentences

They include a three-axis accelerometer, an optical heart rate monitor, altimeter, GPS, and relative SpO2 sensor.

It has a three-axis compass, a barometric altimeter, and multiple GPS connections built right in.

On top of that, it also comes with a sophisticated array of sensors, including an optical heart rate monitor, built-in GPS, 3-axis accelerometer, altimeter, and more-all working to provide you with the most accurate health data possible.

If you do jump from Series 5 to Series 6, you’ll get faster charging, blood oxygen monitoring, the U1 chip, and an always-on altimeter, which I have never actively used.

The helicopter has its own on-board computer, heater, guidance system, cameras and laser altimeter.

From Time

Some trackers come with a built in altimeter to keep you honest on the number of stairs you take each day.

A tracker with an altimeter will give you a far more accurate picture of calories-burned.

The best fitness trackers have a built-in altimeter, which measures elevation.

And always the quivering needle crept up to new marks of speed, while their altimeter marked off the passing levels.

He glanced up at the altimeter needle, which was sliding by the 24,000-foot mark.

When he checked the altimeter again, it registered just over 30,000 feet.

The altimeter showed slightly over forty-two miles when stage two detached itself.

Altimeter, al-tim′e-tėr, n. an instrument for measuring heights.


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[ak-suh-lot-l ]

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