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Overhead projector

From Biology-Online Dictionary | Biology-Online Dictionary
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overhead projector --> epidiascope

(Science: instrument) A projector by which images are reflected by a mirror through a lens, or lenses, onto a screen, using reflected light for opaque objects and transmitted light for translucent or transparent ones.

Synonym: overhead projector.

Origin: epi-_ G. Dia, through, _ skopeo, to view