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a. a device for operating a mechanism, such as a camera shutter, a short time after setting
b. (as modifier): a delayed-action fuse.
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|Noun||1.||delayed action - a mechanism that automatically delays the release of a camera shutter for a fixed period of time so that the photographer can appear in the picture|
camera, photographic camera - equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and light-sensitive film at the other)
mechanism - device consisting of a piece of machinery; has moving parts that perform some function