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

Words Near R-value in the Dictionary