groundtruthing
n.— Note: OED defines this as “the action or process of establishing ground truth,” and defines “ground truth” as “information obtained by direct measurement at ground level, rather than by interpretation of remotely obtained data.” «Checking “hot” spots identified last year by thermal imaging on Bella Vista’s seven lakes should begin in the coming weeks. The process, called groundtruthing, could take up to a year to complete with additional testing next summer.» —“Checking lakes for contamination could take up to 12 months” by Charles Huggins The Weekly Vista Oct. 3, 2007. (source: Double-Tongued Dictionary)
Further reading
Why is boxing called the sweet science when it’s obviously such a bruising sport? Also, a mother of five is baffled when her Gen Z kids use words she thought she knew. For example, they call sweatshirts sweaters, and declare that’s so aesthetic...
David from Plymouth, Wisconsin, wonders about the expression a cord of wood. The phrase goes back to the 17th century and has to do with using a cord to measure a specific quantity of stacked wood. This is part of a complete episode. Transcript of...