Wiktionary
additively
adv. In an additive manner.
Usage examples of "additively".
It was a certified copy and it said, All cultural, ethnological, political and related material regarding Blito-P3, was ordered perpetually and additively deleted from the data banks on below date now twenty-five years past, by Lombar Hisst, Chief Executive of the Coordinated Information Apparatus, Exterior Division, Voltarian Confederation.