R-value Definition

ärvălyo͝o
noun
A measurement indicating the resistance of a given thickness of material, esp. insulating material, to the flow of heat: the higher the R-value, the greater the insulation.
Webster's New World

(computing, programming) Any value that is not an lvalue.

Wiktionary

Origin of R-value

  • As for lvalue, but using r for right-hand side.

    From Wiktionary

  • r(esistance) value

    From American Heritage Dictionary of the English Language, 5th Edition

R-value Sentence Examples

  • Does this not count the R-value twice, effectively doubling the insulation value of the partition between the two zones?

  • Install insulation with the proper R-value, a factor that describes the material's ability to resist heat.

  • The R-value is the measure of the insulation's ability to stop the flow of heat.

  • Insulation with a higher R-value will offer you greater protection against heat loss.

  • The level of R-value necessary for you home depends a great deal upon the climate in which you live.

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