In computer science, an entity is an object that has an identity, which is independent of the changes of its attributes. It represents long-lived information relevant for the users and is usually stored in a database.
Definition of entity noun from the Oxford Advanced Learner's Dictionary. something that exists separately from other things and has its own identity. The unit has become part of a larger department and no longer exists as a separate entity. These countries can no longer be viewed as a single entity.
something that exists as a distinct, separate, independent, or self-contained unit: Germany was a single entity before World War II, became two entities after the war, and now is one entity again.
There are six meanings listed in OED's entry for the noun entity, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.
