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Catoptron
Catopter Ca*top"ter, Catoptron Ca*top"tron, n. [Gr. ?
mirror, fr. ? visible.]
A reflecting optical glass or instrument; a mirror. [Obs.]
Polyoptron
Polyoptron Pol`y*op"tron, Polyoptrum Pol`y*op"trum, n. [NL.,
from Gr. poly`s many + ? seen.] (Opt.)
A glass through which objects appear multiplied, but
diminished in size. [R.]
Meaning of PTron from wikipedia
