the process of adding something to something that has already been added

These organisms retain their characteristics with relatively little change or superaddition.

The super-addition of this infection tends to make the disease more serious. 这种感染的叠加往往会使疾病变得更加严重。

something that has been added to something else that has already been added

The skull is a superaddition to the spine.

The maximum dose was administered, followed by super-additions every hour. 给予最大剂量，然后每小时进行一次超量加药。