Origin: Greek suffix -ology
Ontology has 3 different meanings across 1 category:
(computer science) a rigorous and exhaustive organization of some knowledge domain that is usually hierarchical and contains all the relevant entities and their relations
"The software team spent weeks building an ontology to ensure every data point in our new database was correctly categorized and linked according to strict hierarchical rules."
the metaphysical study of the nature of being and existence
"The philosopher spent hours debating ontology to understand whether numbers exist independently of human thought."
The branch of metaphysics that addresses the nature or essential characteristics of being and of things that exist; the study of being qua being.
"The philosopher argued that our modern database structure lacks a robust ontology, as it fails to distinguish between physical objects and abstract concepts in a way that reflects their true nature of existence."
The word "ontology" comes from the Ancient Greek words for "being" and "account," originally combining to mean a study of existence. It was first borrowed into Latin in 1606 before entering English usage around 1663.