English Words: O
15,494 words · Page 115 of 310
The physical, cultural, moral, or intellectual development of each individual passes through stages similar to the developmental stages of that individual's species, society, or civilization. Not taken literally since the late 19th century.
A scholar or theorist of ontology, or an adherent of a particular ontological doctrine.
The branch of metaphysics that addresses the nature or essential characteristics of being and of things that exist; the study of being qua being.
One of 83 counties in Michigan, United States. County seat: Ontonagon. It is situated on the Upper Peninsula.
Pertaining to or characteristic of ontonomy; Involving the harmonious coexistence of disparate entities.
A philosophy of existence that emphasizes the harmonious coexistence of nonuniform entities.
A comprehensive explanation for being (in contrast to merely a description of being, or a reason for being).
The ontology of God and/or the theology of being; a tradition of philosophical theology first prominent among medieval scholastics, notably Duns Scotus.
The burden of proof, the onus; the duty of a party in a legal proceeding to prove an assertion of fact; it includes both the burden of production and the burden of persuasion.
the operculum of kinds of strombus or muricid, smoked as an ingredient in the Mosaic incense and pre-modern medicine
Nail: Relating to fingernails, toenails, or homologous structures such as claws or hooves.
A fine, pallid, translucent band at the junction of the distal nail bed and hyponychium.
Dystrophic changes in nails, such as deformations, malformations or discolourations.
Spelling & Dictionary Insight
The English alphabetical index for the letter O contains 15,494 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 310 pages, and you are currently viewing page 115. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.
On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.
For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "O" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.