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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Refers to the incline of the runway. Normally, most runways have a slight slope of +- 2 degrees. This means that one end of the runway has a slightly higher elevation than the other. Some runways may have a much larger slope and would be a one direction runway because you shouldn’t take-off with a large up slope or land with a large down slope.

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