Also found in: Thesaurus, Legal, Acronyms, Encyclopedia, Wikipedia.
Related to nisi: Order nisi
Taking effect at a specified date only if no cause is shown for modification during the interim: a decree nisi.
(Law) (postpositive) law (of a court order) coming into effect on a specified date unless cause is shown within a certain period why it should not: a decree nisi.
[C19: from Latin: unless, if not]
ni•si(ˈnaɪ saɪ, ˈni si)
Law. scheduled to become final on a particular date: a decree nisi.
[< Latin: if not, unless (conjunction)]