The theory of a particular philosopher or school of thought concerning the fundamental types of entity in the universe.
A logical system involving theory of classes, developed by Stanislaw Lesniewski (1886-1939).
A structure of concepts or entities within a domain, organized by relationships; a system model.
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.
Rational thinking (or the capacity for it); the cognitive faculties, collectively, of conception, judgment, deduction and intuition.
That which causes something: an efficient cause, a proximate cause.
An excuse: a thought or a consideration offered in support of a determination or an opinion; that which is offered or accepted as an explanation.
A premise placed after its conclusion.
A motive for an action or a determination.
To support with reasons, as a request.
To arrange and present the reasons for or against; to examine or discuss by arguments; to debate or discuss.
To persuade by reasoning or argument.
To find by logical process; to explain or justify by reason or argument.
To deduce or come to a conclusion by being rational
To overcome or conquer by adducing reasons.
To perform a process of deduction or of induction, in order to convince or to confute; to argue.