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Pronunciation varies by accent · noun
(historical) A kind of projector or magic lantern that did not require slides..
Use radiopticon when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Radiopticon means (historical) A kind of projector or magic lantern that did not require slides..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use radiopticon where its definition matches the intended context.
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