enlarger

[en-lahr-jer]
noun Photography.
an apparatus used for making projection prints, having a head for holding, illuminating, and projecting a film negative and a bed for holding a sheet of sensitized printing paper.
Also called projection printer.
Compare contact printer.


Origin:
1535–45, for an earlier sense; enlarge + -er1

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World English Dictionary
enlarger (ɪnˈlɑːdʒə)
 
n
an optical instrument for making enlarged photographic prints in which a negative is brightly illuminated and its enlarged image is focused onto a sheet of sensitized paper

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica
Encyclopedia

enlarger

in photography, device for producing a photographic print or negative larger than the original negative or transparency. The enlarger consists of a projection system, or head assembly, mounted on a horizontal base. The head assembly includes an enclosed light source, a holder for positioning and flattening the negative, a lens for projecting the image onto the base (which holds the paper), and a mechanism for focusing the image. The head assembly may be raised or lowered to adjust the size of the print.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The photographer uses a device called an enlarger to project the light through the negative and onto the paper.
Changes in duct diameter shall be accomplished using a rigid, smooth bore enlarger.
Move reference table to align pattern film over circuit board holes with reference marks on enlarger scope.
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