Meaning & use
altimeter
An instrument that measures altitude, or height above a fixed reference point, such as sea level.
See it in a sentence
The pilot checked the altimeter as the plane began its slow descent.
Hikers sometimes carry a small altimeter to track their elevation on a climb.
A note on using this word
Altimeters are essential aircraft instruments, and simpler versions are also built into watches and phones for hikers.
Words with a similar meaning
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