Nī'sī, conj.

[Lat.] Unless; if not. ☞ In legal proceedings, this word is used to indicate that any order, &c., shall take effect at a given time, unless before that time the order, &c., is modified, or something else is done to prevent its taking effect. Continuance nisi is a conditional continuance of the case till the next term of the court, unless otherwise disposed of in the mean time.