U-value

noun
U-val·​ue | \ ˈyü-ˌval-(ˌ)yü How to pronounce U-value (audio) \

Definition of U-value

: a measure of the heat transmission through a building part (such as a wall or window) or a given thickness of a material (such as insulation) with lower numbers indicating better insulating properties — compare r-value

First Known Use of U-value

1949, in the meaning defined above

History and Etymology for U-value

unit

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Time Traveler for U-value

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The first known use of U-value was in 1949

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Cite this Entry

“U-value.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/U-value. Accessed 18 Jan. 2021.

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