English Words: O
15,494 words · Page 177 of 310
A religious tablet, usually carrying a representation of Christ or the Virgin Mary, which is kissed by the priest during the Mass ("kiss of peace"); it is then passed to others at the mass who also kiss it.
A curve whose contact with a given curve at a given point is of a higher order (or involves the equality of a greater number of successive differential coefficients of the ordinates of the curves taken at that point) than that of any other curve of the same kind.
An antiviral drug that is taken orally in the form of its phosphate C₁₆H₂₈N₂O₄·H₃PO₄ and is a neuraminidase inhibitor used in the treatment and prevention of influenza. It is a derivative of shikimic acid, and is marketed as Tamiflu.
Acronym of optical search for extraterrestrial intelligence, comparable to SETI, but using visible light instead of traditional radio waves.
An apprentice geisha having the role of pouring sake or other alcoholic beverages for others.
A person's favorite VTuber, idol, or character, especially one they actively support and promote.
A moist towel for cleaning the hands, offered to customers in Japanese restaurants and bars.
a kimarite in which the attacker pushes his opponent out of the ring, maintaining hand contact at all times
Initialism of Open Systems Interconnection, an International Standard ISO/IEC 7894:1994(E) subtitled Basic Reference Model, containing a formal description of an idealized computer network architecture.
A willow, of species Salix viminalis, growing in wet places in Europe and Asia, and introduced into North America, considered the best willow for wickerwork.
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 177. 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.