elevation - distance of something above a reference point (such as sea level); "there was snow at the higher elevations"

level - height above ground; "the water reached ankle level"; "the pictures were at the same level"

ceiling - (meteorology) altitude of the lowest layer of clouds

ceiling - maximum altitude at which a plane can fly (under specified conditions)

distance, length - size of the gap between two places; "the distance from New York to Chicago"; "he determined the length of the shortest line segment joining the two points"

angular position - relation by which any position with respect to any other position is established