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Pronunciation varies by accent · noun
(photography) A five-sided prism used in the viewfinder of most single-lens reflex cameras.
Use pentaprism when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Pentaprism means (photography) A five-sided prism used in the viewfinder of most single-lens reflex cameras.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use pentaprism where its definition matches the intended context.
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