- height; esp., the height of a thing above the earth's surface or above sea level
- a high place or region: usually used in pl.
- a high level, rank, etc.
- Astron. the angular height of a planet, star, etc. above the horizon
- the perpendicular distance from the designated base of a figure to its highest point or to the side parallel to the base
- any line segment representing such a distance
Origin of altitudeClassical Latin altitudo from altus, high, origin, originally past participle of alere, to nourish, cause to grow: see old
- a. The height of a thing above a reference level, especially above sea level or above the earth's surface. See Synonyms at elevation.b. Great height or elevation: has trouble breathing at altitude.c. often altitudes A high location or area.
- Astronomy The angular distance above the observer's horizon of a celestial object.
- Mathematics The perpendicular distance from the base of a geometric figure to the opposite vertex, parallel side, or parallel surface.
Origin of altitudeMiddle English from Latin altitūdō from altus high ; see al-2 in Indo-European roots.
- The absolute height of a location, usually measured from sea level.
- As the altitude increases, the temperature gets lower, so remember to bring warm clothes to the mountains.
- A vertical distance.
- (geometry) The distance measured perpendicularly from a figure's vertex to the opposite side of the vertex.
- The perpendicular height of a triangle is known as its altitude.
- (astronomy) The angular distance of a heavenly body above our Earth's horizon.
- Height of rank or excellence; superiority.
- (dated, in the plural) Elevation of spirits; heroics; haughty airs.
- Highest point or degree.
From Middle English, from Latin altitudo (“height"), from altus (“high").