daylight factor

noun

Definition of daylight factor

: the ratio of the illumination from windows at any point indoors to that out in the open, the test surface being horizontal in each case

called also window-efficiency ratio

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First Known Use of daylight factor

1915, in the meaning defined above

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The first known use of daylight factor was in 1915

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Cite this Entry

“Daylight factor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/daylight%20factor. Accessed 5 Dec. 2020.

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