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groundspeed

or ground speed

[ ground-speed ]

noun

  1. the speed of an aircraft with reference to the ground. ground.

groundspeed

/ ˈɡraʊndˌspiːd /

noun

  1. the speed of an aircraft relative to the ground Compare airspeed
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of groundspeed1

First recorded in 1915–20; ground 1 + speed
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How does groundspeed compare to similar and commonly confused words? Explore the most common comparisons:

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groundsmanground squirrel

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