A condition in which there is less than normal bending of a radar beam. This may be as a result of an abnormal vertical gradient of temperature and/or water vapor.

Aviation dictionary. 2014.

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Look at other dictionaries:

  • subrefraction — sub·refraction …   English syllables

  • subrefraction — “+ noun Etymology: sub + refraction : a state of refraction (as of the atmosphere) that is less than normal and is usually associated with a sharp vertical gradient of some physical factor (as temperature) …   Useful english dictionary

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