Dominant models of depression tend to treat the condition as a defect or deficiency.
Nowhere has the deficiency been more painfully on display than with regard to the Middle East.
1630s, from deficience (mid-15c.) + -cy; or from Late Latin deficientia, from deficientem (see deficient).
deficiency de·fi·cien·cy (dĭ-fĭsh'ən-sē)n. A lack or shortage of something essential to health; an insufficiency.