subrefraction
noun
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 (such as temperature)
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“Subrefraction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subrefraction. Accessed 22 Nov. 2024.
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