A more thorough explanation:

Definition: Interdictory (in-tər-dik-tər-ee) is an adjective that describes something related to an interdiction or having the power to interdict.

Examples:

• The interdictory measures taken by the government prevented the spread of the disease.
• The judge issued an interdictory order to stop the construction of the building.

In the first example, the use of interdictory refers to the actions taken by the government to prevent the spread of a disease. In the second example, the judge has the power to issue an interdictory order to stop the construction of a building.