ad hoc means "for this purpose", "for this” or "for this effect". It is a Latin expression, generally used to inform that a certain event has a temporary character and that it is intended for that specific purpose.
An exam ad hoc, a method ad hoc, a position or a function ad hoc, are examples that define the creation of something temporary, which will only serve a certain purpose.
At the legal context, the expression is used when someone is assigned to perform a specific task. At the Right, attorney ad hoc means the temporary appointment of an attorney for the public defense of a defendant who attends a hearing without a professional to defend him.
In science, a hypothesis ad hoc it is generally created with the intention of trying to prove what a proposed new theory cannot explain, preventing it from being discredited.
In Philosophy, the hypotheses ad hoc they also arise as arguments invented from the very fact that is intended to be explained.
ad hoc network
In Computing, a network ad hoc is a temporary link between multiple computers and devices used for a specific purpose, for example: network games, document sharing, printer sharing, internet sharing with Internet users. network etc.
the networks ad hoc are wireless networks in which interconnected computers communicate directly with each other without the need for a router.