ontology
(philosophy) The branch of metaphysics that addresses the nature or essential characteristics of being and of things that exist.
(philosophy) The set of conceptual or material things or classes of things that are recognised as existing, or are assumed to exist in context, and their interrelations.
Do you believe in ghosts? Then ghosts are in your ontology, along with tables and chairs and songs and vacations, and snow, and all the rest. It has proved more than convenient to extend the term "ontology" beyond this primary meaning and use it for the set of "things" that an animal can recognize and behave appropriately with regard to [...]
(philosophy) The theory of a particular philosopher or school of thought concerning the fundamental types of entity in the universe.
(logic) A logical system involving theory of classes, developed by Stanislaw Lesniewski.
(computer science, information science) A structure of concepts or entities within a domain, organized by relationships; a system model.
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