Webster’s Revised Unabridged Dictionary · 1913
Polyoptron
Pol′y·op′tron, Pol′y·op′trum, n. [NL., from Gr. πολύς many + ὀπτός seen.] (Opt.) A glass through which objects appear multiplied, but diminished in size. [R.]
Webster’s Revised Unabridged Dictionary · 1913
Pol′y·op′tron, Pol′y·op′trum, n. [NL., from Gr. πολύς many + ὀπτός seen.] (Opt.) A glass through which objects appear multiplied, but diminished in size. [R.]