A concept that states that any fluctuation in demand of a good will also change the amount of wear and tear on the machinery required to make the good. This concept is also called accelerator principle.

A policy that pays 25 percent of death benefits in the case of a medical emergency.

A clause written into financial agreements that allows the lender to demand a full payment at any time. This is only done when the payer does not pay. It is also called a call clause or an act of bankruptcy.