Definitions for

**"Altitude"****Related Terms:**Azimuth, Elevation, Latitude, Angular distance, Prime vertical, Horizon, Geodetic coordinates, Parallels, Geoid, Longitude, Meridian, Parallel of latitude, Meridional, Hour angle, West, Geographic coordinates, Polar axis, Azimuth angle, Culmination, Celestial coordinates, Bearing, Meridians, Pole , Prime meridian, Zenith, Geopotential height, Elevation angle, Northing, South pole, Ascending node, Graticule, Declination, True north, Greenwich meridian, Mercator projection, Equator, Sextant, Vertical circle, Agl, Polar orbit, Position angle, Geographic coordinate system, Departure, Absolute location, Easting, Spheroid, Octant, Culminate, Compass rose, Quadrant

Space extended upward; height; the perpendicular elevation of an object above its foundation, above the ground, or above a given level, or of one object above another; as, the altitude of a mountain, or of a bird above the top of a tree.

The elevation of a point, or star, or other celestial object, above the horizon, measured by the arc of a vertical circle intercepted between such point and the horizon. It is either true or apparent; true when measured from the rational or real horizon, apparent when from the sensible or apparent horizon.

The perpendicular distance from the base of a figure to the summit, or to the side parallel to the base; as, the altitude of a triangle, pyramid, parallelogram, frustum, etc.

Height of degree; highest point or degree.

Height of rank or excellence; superiority.

Elevation of spirits; heroics; haughty airs.

The vertical distance between a point and a reference datum surface such as sea level.

The vertical distance of a level, a point or an object considered as a point measured in feet Above Ground Level (AGL) or from Mean Sea Level (MSL). 1) MSL Altitude. Altitude expressed in feet measured from mean sea level. 2) AGL Altitude. Altitude expressed in feet measured above ground level. 3) Indicated Altitude. The altitude as shown by an altimeter. On a pressure or barometric altimeter it is altitude as shown uncorrected for instrument error and uncompensated for variation from standard atmospheric conditions. (FAA4)

height; the degree or amount of elevation above the foundation or ground.

The vertical elevation of an object above a surface of a planet or natural satellite (as in sea level or land)

the distance an object appears to be above the horizon. This angle is measured up from the closest point on the horizon.

Part of a local coordinate system (with "azimuth") for astronomical objects. Altitude is the distance, measured in degrees, above the horizon. It is a function of the observer's location.

is the elevation above sea level.

The height above the reference ellipsoid

The height of an object usually in comparison to sea level.

the angular distance of a celestial body above or below the horizon, measured along the great circle passing through the body and the zenith. Altitude is 90° minus zenith distance.

The height above the surface of a planet. Also, the name of the astronomical coordinate measuring the angular distance above the horizon.

(of the sun): the angular distance of the (centre of) the sun's disk above the observer's horizon.

distance above (or below) sea level of a geographic location Seehöhe

The angular height of a star, or other celestial object, above the astronomical horizon.

The vertical height above Earth's surface. angstrom: A unit of length equal to one hundred-millionth of a centimeter.

Vertical distance above sea-level or the earth's surface.

a line that intersects one of the vertices of the triangle and perpendicular to its opposite side.

The current elevation from sea level that the GPS receiver is located. [Section 4.1.2.8

the perpendicular distance from the base of a geometric figure to opposite vertex (or side if parallel)

angular distance above the horizon (especially of a celestial object)

a line drawn from a vertex perpendicular to the opposite side

a perpendicular segment from a vertex to the line of the opposite side

The vertical angular distance of a point in the sky above the horizon. Altitude is measured positively from the horizon to the zenith, from 0 to 90 degrees.

The angular elevation of a celestial object above the horizon. (See Observations Using a Gnomon and Modeling the Earth-Sun System )

The angular distance from the horizon to the sun.

Altitude tells you high above the surface something is. If a helicopter is flying at an altitude of 1,000 meters, that means it's 1,000 meters off the ground.

The angle of a body above or below the plane of the horizon – negative altitudes are below the horizon.

A line segment giving the height of a polygon, polyhedron, cone, cylinder, or other geometric figure.

Angular distance of celestial body above the observer's true horizon. Also the arc distance on the observer's vertical circle between the horizon and the observed body.

The distance from the base of a figure to the highest point in the figure, especially in a triangle.

Angular distance, usually measured in degrees, above the horizon

How high a place is above sea level.

Angle above the horizon, in degrees. 0° is the horizon, 90° the zenith.

Altitude is the height of an area, measured from sea level.

Height, measured as distance along the extended earth's radius above a given datum, such as average sea level.

The angular distance of an object from your local horizon. For example, an object at the zenith would have an altitude of +90 degrees. An object exactly halfway from the horizon to the zenith would have an altitude of +45 degrees.

A measure of height of an object, usually with reference to the earth's surface, or sea level.

Height above a datum; the datum is usually mean sea level. See elevation.

height above sea level; measured in metres.

Height in space of an object or point relative to sea level or ground level.

the height of a vehicle above ground or sea level.

The height above the ground. In Powered Paragliding, the altitude is limited to your comfort. As you go higher, the temperature drops. Also, as you go higher, the air becomes thin. Heights of over 10,000 feet can be reached in a Powered Paraglider.

The vertical elevation of a location above sea level.

the perpendicular distance from the base of a geometric figure to the opposite vertex, parallel side, or parallel surface

Height above the Earth's surface.

Distance above sea level(the surface of the sea). Tells you how high or how tall a mountain or other piece of land is; how many feet above the ground an airplane flies. The altitude of Denver, Colorado, is over 5,000 feet.

The angle measured from the horizon (0°) toward the zenith (90°).

The direct angular distance between the celestial object and the horizon, measured vertically.

Height above sea level (on the Earth), or height above the surface level of a planet or moon.

This is the distance from the ground that an object is.

Height expressed in units of distance above a reference plane, usually above mean sea level or above ground.

The height of an object above sea level. sunPATH gives altitude readings for the Sun’s position during the day. You should use a Clinometer to accurately measure these angles.

The vertical distance of an aircraft or object above a given reference, such as ground or sea level.

L: "height"] Height. Aircraft pilots always distinguish between "absolute altitude", which is height above the ground surface, and "true altitude", which is height above sea level. In the mountains, the difference between the two numbers can be dramatic and fatal. See also "elevation."

The elevation of a compressor above sea level.

an aircraft's height above sea level

the perpendicular distance from a vertex in a polygon to its opposite side.

length from the uppermost point of a triangle to the line opposite.

This indicates the height above sea level at which our wing is flying. It is measured in feet or meters. This becomes important for wings because the conditions of the air (temperature, pressure, and density) change as we go higher. This will effect the amount of lift that a wing generates.

elevation above or below a reference datum, as defined in Federal Information Processing Standard 70-1. See also elevation.

The distance between a given position and the closest point on the WGS84 reference ellipsoid. This measure is positive outside the ellipsoid or above the geoid.

n. Vertical distance or elevation above any point or base-level, as the sea.

Height of aircraft above sea level. The word should be used with discretion. Thus 'high altitude' means merely 'high height' and should be avoided. 'Maximum Power Altitude' is the lowest height at which full throttle should be used at maximum permissible r .p.m. of an aero engine. For a supercharged engines it is the greatest height at which the rated boost pressure can be maintained at max. permissible r .p.m. 'Rated Altitude' - preferably 'rated height' - is the lowest height at which full throttle should be used at normal r.p.m. For a supercharged engine it is the greatest height at which 'the rated boost pressure can be maintained at normal r.p.m.

The angular distance of an object above the horizon.

The height of the land. The weather conditions of a place change with altitude.

The height above sea level is important to automotive emissions control because the higher the altitude, the fewer oxygen molecules in the air adversely effects compression and air/fuel ratios

Height above sea-level of any point on earth's surface or in atmosphere

Height expressed as the distance above a reference point, which is normally sea level or ground level.

The vertical distance above the reference elevation or datum, usually the National Geodetic Vertical Datum of 1929, or the North American Vertical Datum of 1988, of an object or point in space.

elevation especially above sea level or above Earth's surface.

The vertical distance of a level, a point, or an object considered as a point, measured from a reference point, usually taken to be mean sea-level.

Angular elevation of a point in the sky, measured in degrees above the horizon (horizon = 0°, the zenith 90°. Often used in conjunction with azimuth to pinpoint the celestial position of an object seen from a specific location at a specified moment in time.

Altitude is the angle of an object from the horizon. If an object is on the horizon, its altitude is 0 degrees. If it is at the zenith, its altitude os 90 degrees.

the angle between an object's position on the celestial sphere and the horizon.

Geography: height above sea level, also called elevation. Geometry: height of a distinguishing feature (vertex, opposite side, and so on) from a base.

Height of an object in the atmosphere above sea level.

angle above and perpendicular to the horizon, or an angular elevation above the horizontal direction in the same azimuth.

Height above sea level. Compare latitude.

In meteorology, the measure of a height of an airborne object in respect to a constant pressure surface or above mean sea level.

Vertical elevation of an object above ground level (AGL) or above sea level (ASL).

Your height above sea level.

The angle (in degrees) above the level horizon where an object in the sky appears. (The object's azimuth is also needed to pinpoint its position.)

Altitude is the height above an accepted standard level, usually taken as sea level. Sea level changes depending on geographic location.

The measurement, usually in degrees, of an object's apparent height above the horizon. An object on the horizon has an altitude of 0 degrees, and an object at zenith has an altitude of 90 degrees. Altitude and azimuth together are one of several types of coordinate systems that astronomers use to locate astronomical objects in the sky. See also

Height above sea level; for navigation and astronomy, altitude is measured as the angle of the star or planet above the horizon.

The height above sea level of a given location. Density corrections for altitude are made using the following formula, where Z is the feet above sea level. Density (Alt) = Density (Std) x [1 â€“ (6.73 x 10-6) Z]5.258

The angular elevation of an object above or below the horizon.

position on the celestial sphere that is the number of degrees an object is above the nearest horizon. Varies from 0° at horizon to 90° at zenith. Vertical position of an object.

The vertical distance from a given level (sea level) to an aircraft in flight.

the height above sea level at which an aircraft is flying.

A line segment from a vertex of a triangle which meets the opposite side at a right angle.

The height of a place expressed in metres above sea level at high water spring tide. In reality, the sea level is arbitrary and can vary considerably from one spring tide to the next, so most countries have a fixed point from which altitudes are triangulated.

measurement of angular elevation of object in the local observer's coordinate system. The altitude is the angular measurement from the horizon. An altitude of 90 degrees is known as zenith. See the Astro 201 explanation of altitude and azimuth for a graphical illustration.

The atmospheric altitude (height above sea level) at which the motor will be operating; NEMA standards call for an altitude not exceeding 3,300 ft. (1,000 meters). As the altitude increases above 3,300 ft. and the air density decreases, the air stability to cool the motor decreases - for higher altitudes higher grades of insulation or a motor derating are required. DC motors require special brushes for high altitudes.

Altitude is the vertical height of a feature, measured as a distance from sea level.

In geometry, an altitude of a triangle is a straight line through a vertex and perpendicular to (i.e. forming a right angle with) the opposite side or an extension of the opposite side. The intersection between the (extended) side and the altitude is called the foot of the altitude. This opposite side is called the base of the altitude.

When describing a type of telescope mount (alt-az), altitude refers to the the y-axis (up-down) motion of a mount.

Term denoting the y-axis (up-down) motion of your telescope mount. Also see Azimuth. Commonly used with Azimuth, i.e., Altitude-Azimuth mount (or Alt-Az mount for short.)

Amagat's law Ambient

20 kilometers (nominal)