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overhead projector

The definition of an overhead projector is a machine that causes an image from a transparent sheet to be projected onto a viewing screen.

(noun)

An example of an overhead projector is what a teacher uses to show their class an enlarged version of a class assignment.

See overhead projector in Webster's New World College Dictionary

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a projector having a flat, transparent top on which a sheetlike transparency is placed, and an overhead mirror that reflects the image on the transparency to a screen

See overhead projector in American Heritage Dictionary 4

noun

A projector capable of projecting enlarged images of written or pictorial material onto a screen or wall from a transparency placed horizontally below the projector and lighted from underneath.

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