The highest point.
The point, in any trajectory of an object in space, where it is farthest from the Earth.
The point, in an orbit about the Earth, that is farthest from the Earth: the apoapsis of an Earth orbiter.
The point, in an orbit about any planet, that is farthest from the planet: the apoapsis of any satellite.
The highest point or maximum degree.
The vertical distance from the ground to the highest part of a standing person or animal (withers in the case of a horse).
The distance of something above the ground or some other chosen level.
A quality of vowels, indicating the vertical position of the tongue relative to the roof of the mouth; in practice, the first formant, associated with the height of the tongue.
A mountain, especially a very high one.
The amplitude of a sine function
The distance from the base of something to the top.
A high point.
An area of land at the top of a cliff.