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1. Elevation especially above sea level or above the earth's surface
   "the altitude gave her a headache"
   - height
    
2. The perpendicular distance from the base of a geometric figure to the opposite vertex (or side if parallel)
    
3. Angular distance above the horizon (especially of a celestial object)
   - elevation, EL, ALT

Derived forms: altitudes

See also: altitudinal, altitudinous

Type of: angular position, distance, elevation, length

Encyclopedia: Altitude Altitude, effects on humans