Derived or acquired from something extrinsic; not part of the real, inherent, or essential nature of a thing.
Produced or originating outside of an organism.
Growing as an exogen, by successive additions to the outside.
Related to the exogen growth phase.
Having no meaning in itself, such as an automatically generated sequential identifier.
Having a cause external to the infected organism.
Being or relating to a change that comes from outside the model and is not explained by the model.