English Words: O
15,494 words · Page 71 of 310
A type of chromolithograph, using oil paint on canvas, that attempts to imitate oil painting
The practice of divination by pouring oil into water and observing the resulting patterns.
An oily liquid obtained by distillation of calcium oleate, and probably consisting of the ketone of oleic acid.
An oil-sugar; a preparation made by saturating thirty grains of sugar with one drop of volatile oil.
The field of horticulture dealing with the production, storage, processing and marketing of vegetables
A city, the administrative centre of Oleshky urban hromada, Kherson Raion, Kherson Oblast, Ukraine, founded in 1784 on the site of a much older settlement.
A fat substitute (a glyceride of sucrose) that cannot be easily digested and therefore adds no fat, calories, or cholesterol to food products; also used as an industrial lubricant.
A diminutive of the female given name Aleksandra /Oleksandra, equivalent to English Alexis of Russian and Ukrainian usage.
An unsaturated fatty amine with the chemical formula C₁₈H₃₅NH₂, used as a surfactant and in the synthesis of nanoparticles.
A unit measuring the strength of an olfactory pollution source as detected by an average adult in typical conditions.
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 71. 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.