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1.
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
 
2.
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