What is the meaning of Altus?

conditional of alti

characterized by relatively great verticality [with accusative or genitive or ablative ] :

2. tall, lofty; high

   tall, lofty; high

   deep, profound

   old, ancient, long gone

   :

   2. high-born, lofty, noble

      high-born, lofty, noble

      high-minded, magnanimous, great

      deep, sound

      deep, perfected, masterful

      deep

      high, shrill, loud, clear

      dark, gloomy

      nourished, having been nourished

      fed, having been fed, maintained, having been maintained, developed, having been developed

      kept, having been kept, supplied with necessities, having been supplied with necessities, supported financially, having been supported financially

      Source: wiktionary.org