An entity is something that exists by itself, although it need not be of material existence. In particular, abstractions and legal fictions are usually regarded as entities. In general, there is also no presumption that an entity is animate.
In business, an entity is a person, department, team, corporation, cooperative, partnership, or other group with whom it is possible to conduct business.
Sometimes, the word entity is used in a general sense of a being, whether or not the referent has material existence, e.g., is often referred to as an entity with no corporeal form (non-physical entity), such as a language. It is also often used to refer to ghosts and other spirits.
The word entitative is the adjective form of the noun entity. Something that is entitative is "considered as pure entity; abstracted from all circumstances", that is, regarded as entity alone, apart from attendant circumstances.
See also 
- Digital identity
- Entity class
- Entity realism, a form of scientific realism
- Object (philosophy)
- Ontology, the study of being, existence and entities