Source : Webster's Revised Unabridged Dictionary (1913)

Stereometer \Ste`re*om"e*ter\, n. [Stereo- + meter.] (Physics)
   1. An instrument for measuring the solid contents of a body,
      or the capacity of a vessel; a volumenometer.

   2. An instrument for determining the specific gravity of
      liquid bodies, porous bodies, and powders, as well as
      solids.