nichtadditiven
The term "nichtadditiv" is a German adjective that translates to "non-additive" in English. It describes a property or process where the outcome of combining two or more elements is not simply the sum of their individual contributions. In other words, the interaction between the components creates an effect that is greater than, less than, or different from what would be expected if their effects were simply added together.
This concept appears in various fields. In chemistry, a non-additive mixture might exhibit properties that are