Wiktionary(0.00 / 0 votes)Rate this definition: 1  isopleth(Noun) A line drawn on a map through all points having the same value of some measurable quantity. 2  isopleth(Noun) thermodynamics A line in a phase diagram indicating the same mole fraction.
(a) General. Socially disadvantaged individuals are those who have been subjected to racial or ethnic prejudice or cultural bias within American society because of their identities as members of groups and without regard to their individual qualities. The social disadvantage must stem from circumstances beyond their control.
The general term âunderprivileged community' (UPC) is applied to a large number of social groups, in fact to a majority of the human race. It is used to refer to ethnic, religious, cultural, social, political and economic groups. It is employed with reference to small minorities, regional linguistic groups, and even to nations as a whole.