standard atmosphere


: an arbitrary ideal set of atmospheric conditions (as used in calculations of aircraft performance)
specifically : the international standard specifying a temperature of 15° C and 760 millimeters pressure at sea level with a vertical temperature gradient of −6.5° C per kilometer up to 11 kilometers altitude and uniform temperature of −56.5° C above that level

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Cite this Entry

“Standard atmosphere.” Dictionary, Merriam-Webster, Accessed 24 May. 2024.

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