ALTIMETRY, Altimetria, the Art of taking or measuring Altitudes, or Heights; whether accessible or inaccessible. See ALTITUDE.Altimetria makes the first Part of Geometry; including the Doctrine and Practice of measuring both perpendicular and oblique Lines; whether in respect of Height, or Depth. See GEOMETRY; see also HEIGHT, etc.The Word is compounded of the Latin Altus, high, and Metior, I measure.