Definition of R-value in English:

R-value

Syllabification: R-val·ue

Entry from US English dictionary

noun

The capacity of an insulating material to resist heat flow. The higher the R-value, the greater the insulating power.

Definition of R-value in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day oleaginous
Pronunciation: ˌōlēˈajənəs
adjective
rich in, covered with, or producing oil; oily