additio
Additio is a term with at least two common referents. In Latin, additio is a noun meaning an addition or increase, formed from the verb addere “to add.” It can be used in various contexts to denote the act or result of adding, such as an added item, a supplementary point in argument, or an increase in quantity.
In modern usage, Additio is also the name of a software product designed for educators. Additio software