The measuring of altitudes; the science which treats of this; also, the subject of this science, the condition of a part of the earth's surface…

A lifting up (of the hands); also, an elevated condition; (of hills) elevation, altitude.

Altitude. Obsolete. rare.

(a) the line or level on a mountain above which no trees grow (cf. snow-line, n.); (b) a row of trees; the edge of a wood.