Source : Webster's Revised Unabridged Dictionary (1913)

Bacterioscopy \Bac*te`ri*os"co*py\, n. [Gr. ?, ?, a staff + ? to
   view.]
   Microscopic examination or investigation of bacteria. --
   {Bac*te`ri*o*scop"ic}, a. -- {*scop"ic*al*ly}, adv. --
   {Bac*te`ri*os"co*pist}, n.

Bacterioscopy \Bac*te`ri*os"co*py\ (-[o^]s"k[-o]*p[y^]), n.
   [Bacterium + -scopy ] (Biol.)
   The application of a knowledge of bacteria for their
   detection and identification, as in the examination of
   polluted water.