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The definition of altitude

5 Definitions of: altitude

    1. noun, the vertical height of an object above some chosen level, esp above sea level; elevation
    2. noun, geometry the perpendicular distance from the vertex to the base of a geometrical figure or solid
    3. noun, Also called: elevation astronomy navigation the angular distance of a celestial body from the horizon measured along the vertical circle passing through the body. Compare azimuth
    4. noun, surveying the angle of elevation of a point above the horizontal plane of the observer
    5. noun, a high place or region
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Synonyms: height, summit, peak, elevation, lofty
 

From Collins

©HarperCollins 2008. Collins English Dictionary definition of altitude