exogenous

Biology, Natural sciences Produced or originating outside of the referent organism.

Biology, Natural sciences Growing as an exogen, by successive additions to the outside.

Medicine, Sciences Of a disease Having a cause external to the infected organism.

Economics, Sciences Of a model Being or relating to a change that comes from outside the model and is not explained by the model.

Computing, Databases, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences Of a key Having no meaning in itself, such as an automatically generated sequential identifier.