A structure of concepts or entities within a domain, organized by relationships; a system model.
A logical system involving theory of classes, developed by Stanislaw Lesniewski (1886-1939).
The theory of a particular philosopher or school of thought concerning the fundamental types of entity in the universe.
The branch of metaphysics that addresses the nature or essential characteristics of being and of things that exist; the study of being qua being.
In a subject view, or a world view, 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; in a body of theory, the ontology comprises the domain of discourse, the things that are defined as existing, together with whatever emerges from their mutual implications.
Conformity to rule; exactness; close correspondence with an example, mood, model, etc.
Conformity to fact or reality; correctness, accuracy.
Something acknowledged to be true; a true statement or axiom.
True facts, genuine depiction or statements of reality.
That which is real, in a deeper sense; spiritual or ‘genuine’ reality.
In the game truth or dare, the choice to truthfully answer a question put forth.
The state or quality of being true to someone or something.
To tell the truth.
To make exact; to correct for inaccuracy.