Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “ground speed”

ground speed

noun [C usually singular]     specialized
An aircraft's ground speed is its speed when measured against the ground rather than the air through which it moves.Speed of motionAviationTravelling by aircraftMovement through the air
(Definition of ground speed noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of ground speed

Translations of “ground speed”

Word of the Day


showing a wish to help or bring advantages to others, even if it results in disadvantage for yourself

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More