Noun
the increase or decrease in costs as a result of one more or one less unit of output
Source: WordNetJustification for infidelity and dishonesty in all their manifestations lies in the marginal cost economics of "just this once. Clayton Christensen
Which comes first - price being set by the intersection of supply and demand, or individual firms equating marginal cost to price? Steve Keen
Monopolistically competitive markets are also allocatively inefficient, as the price given is higher than Marginal cost. Source: Internet