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  1. Ontology - Wikipedia

    Ontology is the philosophical study of being. It is traditionally understood as the subdiscipline of metaphysics focused on the most general features of reality. As one of the most fundamental …

  2. Ontology | Definition, History & Examples | Britannica

    ontology, the philosophical study of being in general, or of what applies neutrally to everything that is real. It was called “first philosophy” by Aristotle in Book IV of his Metaphysics.

  3. Ontology and Information Systems - Stanford Encyclopedia of …

    Jan 3, 2026 · In philosophy, the field of ontology is often described as “the study of what there is” (see the entries on social ontology, logic ontology and natural language ontology).

  4. What Is Ontology? Definition, Components & AI Use Cases in 2026

    4 days ago · Ontology gives AI systems shared meaning. Learn what it is, how it differs from knowledge graphs and semantic layers, and how to build one for your stack.

  5. ONTOLOGY Definition & Meaning - Merriam-Webster

    The meaning of ONTOLOGY is a branch of metaphysics concerned with the nature and relations of being. How to use ontology in a sentence.

  6. What is Ontology? | The Ontology Research & Development Network

    What is Ontology? Ontology is the philosophical study of being, existence, and reality. In information science, an ontology is a formal representation of knowledge as a set of concepts within a domain …

  7. Ontology: Theory and History

    Pure philosophical ontology is different from applied scientific ontology, and ontology in the applied scientific sense can be understood either as a discipline or a domain.

  8. Exploring Ontology: A Comprehensive Overview - Philosophos

    Dec 17, 2025 · Ontology is a branch of philosophy that deals with the nature of being and the relationship of entities to one another. It is also closely related to metaphysics, as it seeks to …

  9. What is Ontology? | Definition, History, Examples & Analysis

    Mar 16, 2023 · Ontology is metaphysics at its most abstract — concerned with the study of existence and reality itself — and so it is foundational to much philosophical thought. Etymologically, ontology …

  10. Understanding Ontology: The Study of Being and Existence

    Jul 1, 2024 · Ontology, the study of being and existence, plays a vital role in philosophy and various scientific disciplines. By exploring the nature of entities, their relationships, and their hierarchical …