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Pronunciation varies by accent · noun
A highly polished surface used in connection with neutron beams..
Use supermirror when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Supermirror means A highly polished surface used in connection with neutron beams..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use supermirror where its definition matches the intended context.
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