Interim or interlocutory orders are those orders passed by a court during the pendency of the suit or proceeding which do not determine finally the substantive rights and liabilities of the parties in respect of the subject matter of the suit or proceeding.
After the suit is instituted by the plaintiff and before it is finally dispose of, the Court may make interlocutory orders as may appear to the Court to be just and convenient. They are made in order to assist the parties to the suit in the prosecution of their case or for the purpose of protection of the subject-matter of the suit. Court are constituted for the purpose of doing justice and must be deemed to possess all powers as may be necessary to do the right and undo the wrong in the course of administration of justice.
Applications made towards this purpose are interim or interlocutory applications.
Some of the interim applications are as follows:

a) Applications for appointment of Court receiver.
b) Applications for temporary injunction.
c) Applications for appointment of a guardian ad idem.
d) Applications for custody of child.

Interim applications are also termed as miscellaneous applications.