A device used in photography to project a negative onto photographic paper to create a larger print.
From 'enlarge' + -er suffix (one who does or that which does). Emerged in the late 19th century with the development of photography as an essential darkroom tool.
An enlarger is basically a backwards projector—it uses light to throw a tiny film image onto light-sensitive paper, letting photographers create huge prints from pocket-sized negatives!
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