altitudes

4 definitions • 3 examples

height above sea level:

We are currently flying at an altitude of 15,000 metres.

Mountain climbers use oxygen when they reach higher altitudes.

height above sea level:

The city of Denver is situated at an altitude of almost exactly one mile.

Altitude is also the distance measured by an angle made by a point on the earth to a star and to the horizon (= place where earth and sky seem to meet).

a segment (= part of a line) that is at a 90° angle to the side to which it is drawn