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Pronunciation varies by accent · noun
(dated) A glass through which objects appear multiplied, but diminished in size..
Use polyoptrum when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Polyoptrum means (dated) A glass through which objects appear multiplied, but diminished in size..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use polyoptrum where its definition matches the intended context.
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