In computer programming, a default argument is an argument to a function that a programmer is not required to specify.

In finance, default is failure to meet the legal obligations (or conditions) of a loan, for example when a home buyer fails to make a mortgage payment, or when a corporation or government fails to pay a bond which has reached maturity. A national or sovereign default is the failure or refusal of a government to repay its national debt.

n. See also: default judgment

In computer programming, a parameter or a formal argument is a special kind of variable used in a subroutine to refer to one of the pieces of data provided as input to the subroutine. These pieces of data are the values of the arguments (often called actual arguments or actual parameters) with which the subroutine is going to be called/invoked.

A default, in computer science, refers to the preexisting value of a user-configurable setting that is assigned to a software application, computer program or device. Such settings are also called presets or factory presets, especially for electronic devices.

n. if a defendant in a lawsuit fails to respond to a complaint in the time set by law (commonly 20 or 30 days), then the plaintiff (suer) can request that the default (failure) be entered into the court record by the clerk, which gives the plaintiff the right to get a default judgment. If the complaint was for a specific amount of money owed on a note, other money due, or a specific contract price (or if the amount due is easy to calculate) then the clerk of the court can enter a default judgment. If proof of damages or other relief is necessary, a hearing will be held in which the judge determines terms of the default judgment. In either case the defendant cannot speak for himself/herself. A defendant who fails to file an answer or other legal response when it is due can request that the default be set aside, but must show a legitimate excuse and a good defense to the lawsuit. See also: complaint default summons

Default judgment is a binding judgment in favor of either party based on some failure to take action by the other party. Most often, it is a judgment in favor of a plaintiff when the defendant has not responded to a summons or has failed to appear before a court of law.

In statistics, as opposed to its general use in mathematics, a parameter is any measured quantity of a statistical population that summarises or describes an aspect of the population, such as a mean or a standard deviation. If a population exactly follows a known and defined distribution, for example the normal distribution, then a small set of parameters can be measured which completely describes the population, and can be considered to define a probability distribution for the purposes of extracting samples from this population.

In law, a default is the failure to do something required by law or to comply with a contractual obligation. Legal obligations can arise when a response or appearance is required in legal proceedings, after taking out a loan, or as agreed in a contract; failure to carry them out puts one in defaults of the obligations.