WordNet sense 1 (the highest level or degree attainable; the highest stage of development):

acme, elevation, meridian, peak, pinnacle, summit, superlative, tiptop, top

WordNet sense 2 (the vertical dimension of extension; distance from the base of something to the top):

tallness

WordNet sense 3 (elevation especially above sea level or above the earth's surface):

altitude

WordNet sense 4 ((of a standing person) the distance from head to foot):

stature