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)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...
Mary Beth in Greenville, South Carolina, wonders: Why do we say four-oh-nine for the number 409 instead of four-zero-nine or four-aught-nine? What are the rules for saying either zero or oh or aught or ought to indicate that arithmetical symbol...