- 1[uncountable] a branch of philosophy that deals with the nature of existence
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
- 2[countable] (computing) a list of concepts and categories in a subject area that shows the relationships between them a guide to creating a marketing ontology biomedical ontologies
NAmE//ˌɑntəˈlɑdʒɪkl//
adjectiveSee ontology in the Oxford Advanced Learner's DictionaryCheck pronunciation: ontology