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Noun: altitude  'al-ti,t(y)ood
  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

Type of: angular position, distance, elevation, length

Encyclopedia: Altitude, effects on humans