A form of sales promotion and a form of special pricing program, used in both consumer and business markets, that is designed to increase product demand by offering a short-term price reduction (i.e., sale price).
A concept in advertising (and promotion in general) that suggests that the existence of a large number of advertising messages within media outlets (e.g., television, newspaper, radio, etc.) makes it difficult for viewers to recognize and remember specific messages (e.g., ad for specific brand).