A provisional decision of a court which does not have force or effect until a certain condition is met such as another petition brought before the court or after the passage of a period time, after which it is called a decree absolute . Although no longer required in many jurisdictions, this was the model for divorce procedures wherein a court would issue A decree nisi, which would have no force or effect until a period of time passed (30 days or 6 months).
DECREE NISI
Meaning of DECREE NISI in English
Duhaime's Law English dictionary. Английский юридический словарь Duhaime . 2012