U-value

[ yoo-val-yoo ]

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

Origin of U-value

1
1945–50; U, symbol for internal energy

Words Nearby U-value

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023