practice. This phrase, which signifies now for then, is used to express that a thing is done at one time which ought to have been performed at another. Leave of court must be obtained to do things nunc pro tunc, and this is granted to answer the purposes of justice, but never to do injustice A judgment nunc pro tunc can be entered only when the delay has arisen from the act of the court. Lat. Now for then. A phrase applied to acts allowed to be done after the time when they should be done, with a retroactive effect i.e., with the same effect as if regularly done.