Digital Twin
    
CIMdata : PLM Glossary
A physics-based description of a system resulting from the generation, management, and application of data, models and information from authoritative sources across the system’s lifecycle.
See Also:
Digital Thread, Model, Data
Alternate Definitions:

Siemens - A digital twin is an exact, virtual representation of a product or process used to virtually validate the performance of its physical counterpart.

DAU - An integrated multiphysics, multiscale, probabilistic simulation of an as-built system, enabled by Digital Thread, that uses the best available models, sensor information, and input data to mirror and predict activities/performance over the life of its corresponding physical twin.