groundplot

[ground-plot]
noun
  1. Aeronautics. a method for obtaining the position of an aircraft by multiplying its groundspeed by its time in flight and marking off the product with respect to its starting position.
  2. ground plan(def 1).

Origin of groundplot

First recorded in 1570–80; ground1 + plot
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of groundplot