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U-value

[ yoo-val-yoo ]
/ ˈyuˌvæl yu /
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noun

a measure of the flow of heat through an insulating or building material: the lower the U-value, the better the insulating ability.

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Mississippi’s nickname comes from the magnificent trees that grow there. What is it?
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Origin of U-value

1945–50; U, symbol for internal energy

Words nearby U-value

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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