English Words: O

15,494 words · Page 307 of 310

oxyphilicadj

Having an affinity for oxygen.

oxyphonianoun

shrillness or high pitch of the voice

oxyphototrophicadj

Performing oxygenic photosynthesis (photosynthesis, where oxygen is produced as a byproduct).

oxypnictidenoun

Any substance that is both an oxide and a pnictide, especially any of a class of such iron compounds that are semiconductors

oxyprenylatedadj

prenylated via an ether linkage

oxypurinenoun

Any oxidised form of a purine, such as hypoxanthine, xanthine or uric acid

oxyquinaseptolnoun

Synonym of diaphtherin.

oxyquinolinenoun

Hydroxy quinoline; a phenol derivative of quinoline.

oxyradicalnoun

Any of a group of radicals containing reactive oxygen atoms.

oxyregulationnoun

The regulation of oxygen in animals and plants

oxyregulatornoun

Any organism that can achieve oxyregulation

oxyresveratrolnoun

A stilbenoid and tyrosinase inhibitor, found in the heartwood of Artocarpus lakoocha.

Oxyrhynchitename

A Coptic dialect used around Oxyrhynchus.

oxyrhynchusnoun

a fish with a pointed snout

oxysaltnoun

A salt of an oxyacid.

oxyselenidenoun

a mixed oxide and selenide

oxysomenoun

One of the small round bodies found in the folds of the cristae in the inner mitochondrial membrane, and involved in ATP synthesis.

oxysophocarpinenoun

An alkaloid found in the plant Sophora flavescens.

oxysteelnoun

Steel produced by reduction of iron oxides by carbon.

oxysteroidnoun

Any of several oxidized derivatives of steroids

oxysterolnoun

Any of several oxidized derivatives of sterols

oxysulfatenoun

A compound containing both an oxide and a sulfate anion.

oxysulfidenoun

A mixed oxide and sulfide.

oxysulphatenoun

Alternative form of oxysulfate.

oxysulphidenoun

Alternative form of oxysulfide.

oxysulphuretnoun

oxysulfide

oxyt.noun

Abbreviation of oxytone.

oxytaxisnoun

movement or orientation towards a supply of oxygen

oxytelluridenoun

a mixed oxide and telluride

oxytetracyclinenoun

A yellow crystalline broad-spectrum tetracycline antibiotic C₂₂H₂₄N₂O₉ that is produced by a soil actinomycete (Streptomyces rimosus) and works by interfering with bacteria's ability to produce essential proteins.

oxytetrafluoridenoun

Any ternary compound containing one oxygen atom and four fluorine atoms

oxythermaladj

warm and rich in oxygen

oxythiaminnoun

Alternative form of oxythiamine.

oxythiomolybdatenoun

An anion containing molybdenum, sulfur, and oxygen, specifically MoOS₃⁻².

oxytocicadj

Serving to promote uterine contractions, thus accelerating childbirth.

oxytocinnoun

A hormone that stimulates contractions during labor, and then the production of milk; also plays a role in social bonding.

oxytocinergicadj

Containing, or releasing oxytocin

oxytoluenenoun

Any of three hydroxy derivatives of toluene.

oxytoneadj

Having the stress on the last syllable.

oxytonesnoun

plural of oxytone

oxytonesisnoun

The shift of accent to the final syllable.

oxytonicadj

Having a stress on the last syllable.

oxytonicaladj

oxytone

oxytonizeverb

To make a word oxytone by dropping the main stress on the final syllable

oxytraumanoun

trauma due to excess oxygen, typically received from a hospital ventilator

oxytropenoun

Synonym of locoweed.

oxyuricidaladj

Destructive to worms of the genus Oxyuris, or pinworms.

oxyuricidenoun

Any anthelmintic that is destructive to worms of the genus Oxyuris, or pinworms.

oxyweldverb

To weld using oxyfuel.

oyintj

An exclamation typically expressing mild frustration or expressing feelings of uncertainty or concern.

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 307. 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.