Law Dictionary

nisi prius

noun nisi pri·us \-ˈprī-əs, -ˈprē-u̇s\

Legal Definition of nisi prius

  1. :  a court of record that tries an issue of fact before a jury and a single judge :  trial court; also :  the proceedings in such a court :  the conducting of jury trials long-distance travel eliminated the nisi prius practice of the justices — W. J. Brennan, Jr.

Origin and Etymology of nisi prius

Medieval Latin, unless before, the words introducing a clause in an English writ commanding a sheriff to provide a jury at the Court of Westminster on a certain day unless the judges of assize previously come to the county from which the jury is to be returned


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a trip made at another's expense

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