altitude

noun

1. elevation especially above sea level or above the earth's surface

   noun.attribute

   Examples

   The altitude gave her a headache.

   Synonyms height

   Source: WordNet 3.0

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

   noun.shape

   Source: WordNet 3.0

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

   noun.linkdef

   Synonyms alt el elevation

   Source: WordNet 3.0

4. Space extended upward; height; the perpendicular elevation of an object above its foundation, above the ground, or above a given level, or of one object above another; as, the <i>altitude</i> of a mountain, or of a bird above the top of a tree.

   noun

   Source: webster1913