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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Imaginary lines placed horizontally on the earth which are used as position coordinates, expressed in degrees, minutes and seconds. From the equator to North or South, we have 0 degrees to 90 degrees, with the equator being at 0 degrees. Lines of latitude are parallel to the equator

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