English Words: O
15,494 words · Page 81 of 310
Of or pertaining to the olivary nucleus and cerebellar hemisphere, especially with regard to the olivocerebellar tract connecting the two by means of fibres.
Of or pertaining to Heinrich Gottfried Ollendorff, a German grammarian and language educator, whose method of learning foreign languages came into vogue from the 1840s.
An aerial maneuver in which one catches air by leaping off the ground with the skateboard and into the air.
enthusiasm for Oliver North (born 1943), former United States Marine Corps Lieutenant Colonel, Republican political commentator, and military historian.
A rare disorder in which intraosseous benign cartilaginous tumors (enchondroma) develop close to growth plate cartilage.
Proteus anguinus, a cave-dwelling neotenous salamander with external gills, found along the coast from northeastern Italy to Montenegro.
A member of an ancient pre-Columbian people living in the tropical lowlands of south-central Mexico, in what are roughly the modern-day states of Veracruz and Tabasco.
An orthorhombic-pyramidal mineral containing hydrogen, iron, niobium, oxygen, phosphorus, potassium, and tantalum.
A form of palmoplantar keratoderma of the palms and soles, with flexion deformity of the digits, that begins in infancy.
A highly saturated impossible color shade of blue-green produced by directly stimulating the "m" ("green") cone cells, approximating the below
The bronchodilator 6-hydroxy-8-{(1R)-1-hydroxy-2-{[1-(4-methoxyphenyl)-2-methylpropan-2-yl]amino}ethyl}-4H-1,4-benzoxazin-3-one.
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 81. 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.