English Words: O
15,494 words · Page 187 of 310
A softening of adult bones due to inadequate mineralization; the adult equivalent of rickets
The expression of genes normally expressed by bone cells in another tissue (typically cancerous)
A protein that binds to hydroxyapatite to facilitate the mineralisation of collagen in bones.
A non-physician healthcare practitioner who practices osteopathy by manipulating the skeleton and muscles. Not to be confused with Doctors of Osteopathic Medicine (D.O.) (also known as osteopathic physicians) who are full physicians like Doctors of Medicine (M.D.).
The medical condition of having low bone density, but not low enough to be considered osteoporosis.
An instrument for transmission of auditory vibrations through the bones of the head, so as to be appreciated as sounds by persons deaf from causes other than those affecting the nervous apparatus of hearing.
A small, abnormal growth of bone (exostosis, bone spur) that forms along joint margins.
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 187. 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.