The act of replacing or being replaced by something or someone else, especially in a position or role. The supersession of the old software by the new version improved the system's efficiency.
The state of being set aside or rendered obsolete, often in favor of something newer or more effective. The supersession of traditional methods by modern technology has transformed the industry.
A legal order by which a higher court or authority postpones or suspends proceedings in a lower court. The counsel applied for a supersession to halt the hearing until the appellate decision was announced.