Economic Definition of excess demand. Defined.
Offline Version: PDF
Term excess demand Definition: A disequilibrium condition in a competitive market in which the quantity demanded is greater than the quantity supplied, hence there's "extra" demand. Pointy-headed economists generally use the more technical term shortage rather than excess demand. The reason, of course, is that shortage has two syllables and excess demand has four. The time saved in pronouncing two syllables rather than four is a definite efficiency plus for the entire economy.