Noun
deadweight loss (countable and uncountable, plural deadweight losses)
(economics) A loss of economic efficiency due to failure to achieve a free market equilibrium.
Deadweight loss does not account for the effect taxes have in leveling the business playing field. Source: Internet
Since S*D* goods are imported, the government gains an area of C and E. However, there is a Deadweight loss of the triangles B and D, or in Diagram 1, the triangles labeled Societal Loss. Source: Internet