noun
altimeter
al-TIHM-ih-t
noun
1
An instrument used to measure altitude, especially in aircraft.
"The pilot checked the altimeter as they began their descent."
How to Use Altimeter
Learner’s notesIn plain EnglishA gauge that tells you how high above sea level or ground you are.
Word Forms
altimeters plural
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The pilot checked the _____ as they began their descent.
Etymology
Coined from Latin altus, "high," plus the "-meter" suffix used for measuring instruments.