1. (

• altitude ,
• height ,

) elevation especially above sea level or above the earth's surface; "the altitude gave her a headache" ;

2. (

• altitude

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

3. (

• elevation ,
• EL ,
• altitude ,
• ALT

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