In Integral Relational Logic, entity is a primal concept, denoting an instance of a class of beings. As such, entities correspond to what Plato regarded as particulars or instances of universals. As entities have attributes in Integral Relational Logic, they also correspond to what Aristotle called subjects and predicates. The concept of entity in Integral Relational Logic thus unifies not only fundamental Platonic and Aristotelian concepts but also the relational model of data with object-oriented modelling methods.
1596, ‘being, something that has real existence’, from Middle French entité or Late Latin entitatem (nominative entitas), from ens (genitive entis) ‘a thing’, proposed by Caesar as present participle of esse ‘to be’, from PIE base *es- ‘to be’.