Noun
residual power (plural residual powers)
(law) Power that is retained by the government after other powers were distributed to other authorities in the course of elections or by the process of delegation.
He has since appeared in Justice League and Justice Society stories, having retained some residual power from the ruby. Source: Internet
When Reed Richards measured the residual power levels left behind when Champion abducted Thing, he declared that the Champion was on a higher level than Galactus. Source: Internet