ETYM Latin altitudo, from altus high. Related to Altar, Haughty, Enhance.
1. Elevation, esp. above sea level or the earth's surface; SYN. height.
2. The perpendicular distance from the base of a geometric figure to opposite vertex (or side if parallel).
Measurement of height, usually given in meters above sea level.

ETYM Written also hight.
The vertical dimension of extension; distance from the base of something to the top; SYN. tallness.
Of a plane figure or solid, the perpendicular distance from the vertex to the base; see altitude.

ETYM AS. heáhnes.
The condition of being high or lofty; SYN. loftiness.

ETYM Old Eng. level, livel, Old Fren. livel, French niveau, from Latin libella level, water level, a plumb level, dim. of libra pound, measure for liquids, balance, water poise, level. Related to Librate, Libella.
1. Establishes the horizontal when a bubble is centered in a tube of liquid; SYN. spirit level.
2. Height above ground.