groundplot

• ground-plot, ground plot

Compound of ground +‎ plot.

groundplot (plural groundplots)

1. (architecture, obsolete) the part of the ground that is covered by a building
2. (architecture, obsolete) a drawing of the ground floor of a building
3. (aviation) a method for determining an aircraft's position by multiplying its groundspeed by its time in flight and measuring off the resultant distance from a previous position

• “groundplot”, in Collins English Dictionary, 2011–present.
• “groundplot”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.
• “groundplot”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “ground-plot, n.”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000.