ontology
Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.
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Detailed reference entry for the English word "ontology", 8-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Hunspell error dictionaries, and usage frequency ranked against the top 100,000 English words in the Wordfreq corpus. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "ontology" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "ontology" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.
ontology is aEnglishnoun. It means: The branch of metaphysics that addresses the nature or essential characteristics of being and of things that exist; the study of being qua being. Pronounced /ɒnˈtɒləd͡ʒi/. Often confused with oncology.
| Property | Value |
|---|---|
| Headword | ontology |
| Language | English |
| Part of speech | Noun |
| IPA | /ɒnˈtɒləd͡ʒi/ |
| Letters | 8 |
| Frequency rank | #31,275 |
| Misspellings tracked | 12 |
| Confusable pairs | 1 |
| Source | Wiktionary (kaikki.org) |
Frequency rank visualization
Spelling & Dictionary Insight
The English entry for ontology is 8 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /ɒnˈtɒləd͡ʒi/. Corpus data places it at rank #31,275 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it.Wiktionary records 5 distinct senses for this headword, so context determines which meaning a reader should apply.
Our Hunspell-derived misspelling index lists 12 documented wrong-spelling variants for ontology, with forms such as "notology", "onntology", and "onotlogy". Each variant represents a distinct typo pattern that appears often enough in corpora to be worth flagging, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution.It also participates in 1 confusable-pair relationship, "oncology", where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: Learned borrowing from New Latin ontologia (1606, Ogdoas Scholastica, by Jacob Lorhard (Lorhardus)), from Ancient Greek ὤν, ὄντος (ṓn, óntos, “being”), present participle of εἰμί (eimí, “being, existing, essence”) + λόγος (lógos, “account”). By surface anal… Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is ontology, spelled O-N-T-O-L-O-G-Y, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.
Definition
- 1The branch of metaphysics that addresses the nature or essential characteristics of being and of things that exist; the study of being qua being.
- 2In 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.
- 3The theory of a particular philosopher or school of thought concerning the fundamental types of entity in the universe.
- 4A logical system involving theory of classes, developed by Stanislaw Lesniewski (1886-1939).
- 5A structure of concepts or entities within a domain, organized by relationships; a system model.
Etymology
Learned borrowing from New Latin ontologia (1606, Ogdoas Scholastica, by Jacob Lorhard (Lorhardus)), from Ancient Greek ὤν, ὄντος (ṓn, óntos, “being”), present participle of εἰμί (eimí, “being, existing, essence”) + λόγος (lógos, “account”). By surface analysis, onto- + -logy. First known English use 1663: Archelogia philosophica nova; or, New principles of Philosophy. Containing Philosophy in general, Metaphysicks or Ontology, Dynamilogy or a Discourse of Power, Religio Philosophi or Natural Theology, Physicks or Natural philosophy, by Gideon Harvey (1636–1702), London, Thomson, 1663. Popularized as a philosophical term by German philosopher Christian Wolff (1679–1754).
This word in other languages
Common misspellings
Also misspelled as: notology,onntology,onotlogy,ontloogy,ontolgoy,ontollogy,ontologgy,ontologyy,ontoloyg,ontoolgy,onttology,otnology
Misspelling Pattern Breakdown
Relative frequency of common misspelling types for ontology
Misspelling Variants of "ontology"
Frequency rank: #31,275 in English
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Nearby English words
Other entries that begin with the letter O in our English index: