altitude meaning and definition

ALTITUDE noun

Definition of altitude (noun)

1. elevation especially above sea level or above the earth's surface
   • "the altitude gave her a headache"
   • synonyms: 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)
   • synonyms: ALT, EL, elevation