A more thorough explanation:

Definition: A writ issued by a judge to summon a new jury panel when there is a problem with the original jury's verdict or return. This writ results in a new trial. It is sometimes abbreviated as venire de novo.

Illustrative caselaw: In Parsons v. Bedford, Breedlove & Robeson, 28 U.S. 433 (1830), a venire facias de novo was issued because the original jury's verdict was deemed invalid.

Example: If a jury in a criminal trial is found to have been biased or to have received improper information, a venire facias de novo may be issued to summon a new jury panel and hold a new trial.

This legal term is important because it ensures that the outcome of a trial is fair and just. If there is a problem with the original jury, a new one can be summoned to ensure that justice is served.