English Words: O
15,494 words · Page 79 of 310
A distinct taxon whose separate identity is derived from a string of genetic bases rather than from morphological differences
A small number of linked ubiquitin molecules, especially when formed by oligoubiquitination
A condition in which only a relatively small amount of urine (typically about 400ml per day) is produced
A small procyonid of most species of the genus Bassaricyon, resembling the kinkajou, native to the rainforests of Central and South America.
A raccoon-like procyonid, of species Bassaricyon neblina, native to the Andean forests of Colombia and Ecuador.
Of or relating to Margaret Oliphant (1828–1897), Scottish novelist and historical writer.
A sedimentary deposit composed of a chaotic mass of heterogeneous material, such as blocks and mud, known as olistoliths, that accumulates as a semifluid body by submarine gravity sliding or slumping of the unconsolidated sediments.
The ship of characters Olivia Pope and Fitzgerald "Fitz" Grant from the television series Scandal.
A tree of species Olea europaea cultivated since ancient times in the Mediterranean for its fruit and the oil obtained from it.
A subspecies of savannah baboon, Papio hamadryas anubis, found in highland areas of East Africa.
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 79. 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.