on·​tol·​o·​gy | \ än-ˈtä-lə-jē How to pronounce ontology (audio) \

Definition of ontology

1 : a branch of metaphysics concerned with the nature and relations of being Ontology deals with abstract entities.
2 : a particular theory about the nature of being or the kinds of things that have existence

Other Words from ontology

ontologist \ än-​ˈtä-​lə-​jist How to pronounce ontology (audio) \ noun

Examples of ontology in a Sentence

Recent Examples on the Web Using an ontology model, consisting of multiple data sets that can be reused by different kinds of applications and for different uses, becomes a necessary step in data normalization. Shaun Cooley, Forbes, 18 July 2022 Using a solution based on standardized ontology and capable of extracting data through a single, secure connection provides the foundation for a common language for systems from different OEMs and manufacturers. Shaun Cooley, Forbes, 18 July 2022 Cyborg ontology is the brain-meld between self and computerized leg. The Cyborg Jillian Weise, Wired, 21 Dec. 2021 This checks out with my cyborg ontology, my cyborg brain. The Cyborg Jillian Weise, Wired, 21 Dec. 2021 This effort produced a few technologies that actually implemented semantic approaches, most notably resource description framework (RDF) and web ontology language (OWL). Bryon Jacob, Forbes, 20 Sep. 2021 This ontology is more fundamental than the frothy influencer economy. Hari Kunzru, Harper's Magazine, 22 June 2021 This plan, if successful, would build a common taxonomy and ontology that connects any piece of health data to any other for faster and more complete population analysis. Peter Hovstadius, STAT, 30 Mar. 2021 Its drama of willful obliviousness is elevated, through Losey’s aesthetic, into a cinematic ontology. Richard Brody, The New Yorker, 6 Sep. 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ontology.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of ontology

1663, in the meaning defined at sense 1

History and Etymology for ontology

New Latin ontologia, from ont- + -logia -logy

Learn More About ontology

Time Traveler for ontology

Time Traveler

The first known use of ontology was in 1663

See more words from the same year

Dictionary Entries Near ontology



on top

See More Nearby Entries 

Statistics for ontology

Last Updated

6 Aug 2022

Cite this Entry

“Ontology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ontology. Accessed 29 Sep. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on ontology

Britannica English: Translation of ontology for Arabic Speakers

Britannica.com: Encyclopedia article about ontology


Test Your Vocabulary

Odd Habits and Quirks

  • image1926873504
  • Which of the following best describes an easily irritated person?
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!