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A concept from the Avengers comic/movie franchise, where if Thanos (the Malthusian monster who opposes the Avengers) obtains a collection of six MacGuffins (called "Infinity Stones"), he can snap his fingers to cause a randomly selected half of all life to spontaneously disappear. The word is a portmanteau of "snap" (as in, snapping one's fingers) and "Rapture" (meaning the purported Christian end times predicted in the Book of Revelations).
Earth's mightiest heroes must assemble once again to prevent Lord Thanos from bringing on the Snapture.
by uksglass June 02, 2018
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A spontaneous capturing of a life event or person on film.
When you decide to take a photo at random without forethought.

Lisa was excited about the snapture she had taken of Greg.
by wildchildrose1967 January 10, 2012
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A computer screen shot or screen capture. Formed by combining "snap" from "snapshot" with "ture" from "capture."
He e-mailed a snapture of the directory to them
by Bill Wallace March 25, 2007
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