Aviation Dictionary

On this page you will find a searchable and comprehensive alphabetical list of aviation terms. You can help us make it the most comprehensive list in the world. If we have missed anything, click on the ‘send us your word’ button to send us your word, acronym or definition and we will consider adding it to our dictionary.

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Windshear

Either a significant horizontal or vertical change in wind speed or direction. This can be extremely dangerous, especially at low levels when landing as a sudden change in wind velocity may cause a loss in lift and could result in an aircraft landing short of the runway. This has caused many accidents, from light aircraft, to large jets.

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