ground-truthing
 n.— «“We use satellite infrared and ultraviolet photographs and examine the number of light bands,” he said this morning. “This gives us an idea of the richness of the habitat.” Through the method, referred to as “ground-truthing,” scientists may compare grass or oak tree acorn production to production levels that the same area sustained a year ago.» —“Hantavirus spikes in Caldera” by Darryl Newman Los Alamos Monitor (N.M.) Aug. 9, 2005. (source: Double-Tongued Dictionary)

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