Source : Webster's Revised Unabridged Dictionary (1913)

Myriorama \Myr`i*o*ra"ma\, n. [Gr. ? numberless + ? a sight, fr.
   ? to see.]
   A picture made up of several smaller pictures, drawn upon
   separate pieces in such a manner as to admit of combination
   in many different ways, thus producing a great variety of
   scenes or landscapes.