The act of restricting and isolating Anomalies, preventing them from posing threats to human society or reality at large.

The act of temporarily restricting and isolating Anomalies through general measures is called Temporary Containment. This is a routine operation for Anomalies with lower threats or greater stability, typically applicable to Anomalies that can be controlled by conventional technology, isolation facilities, or standard containment procedures, Some Esperr Abilities can also achieve Temporary Containment.

The vessels that contain Anomalies are called Containers. At the Celaeno Compound, Anomalies are held in Containment Units.