- In positional astronomy, the height of an object above the horizon measured in degrees or some other unit of angle. Otherwise, the height of an object above a surface, as with a satellite above the Earth.
- In surveying or astronomy, the angular distance of a celestial body above the horizon.
- noun a vertical distance from the ground or sea level
- height above sea level. This can affect climate in many ways: the temperature drops about 0.5ºC for every 90 metre rise above sea level. Every 15 metre rise in height usually shortens the growing season by two days and may check the rate of growth during the year. High land is likely to receive more rain than lowland areas.