English words: ocean dandruff to octadecagon

300 English words, part 6 of 67 of the words starting with O, A to Z. 22 have a page of their own.

English words ocean dandruff to octadecagon

ocean dandruff noun: Synonym of marine snow.
ocean depths noun /ˈəʊ̯.ʃən ˌdɛpθs/: Synonym of deep sea.
ocean dumping noun: The act of disposing of waste (especially nuclear waste) in a deep section of the ocean.
ocean engineering noun: The engineering of structures and systems in or adjacent to the ocean, such as piers, harbors, and offshore platforms.
ocean eyes noun: blue eyes
ocean floor noun: Synonym of seabed.
ocean-going adjective: Alternative form of oceangoing.
ocean liner noun: a narrow-beam passenger ship designed for high speed transoceanic travel
ocean lore noun: The teaching, knowledge, study, or science of the ocean.
ocean-nymph noun: Synonym of sea-nymph
ocean perch noun: A fish of species Sebastes norvegicus, of the North Atlantic.
ocean planet noun: Synonym of ocean world.
ocean pout noun: A fish, Zoarces americanus
ocean quahog noun: An edible clam native to the North Atlantic Ocean, Arctica islandica.
ocean ranching noun: A type of aquaculture, used mainly in culturing Pacific salmon, wherein juvenile fish are hatched and reared, released to mature in the open ocean, and...
Ocean Stater noun: A Rhode Islander.
ocean station vessel noun: Synonym of weather ship (“ship for reporting meteorological data”).
ocean sunfish noun: A large, heavy species of bony fish, Mola mola, native to tropical and temperate waters around the world.
ocean tramp noun: Synonym of tramp steamer.
ocean world noun: An astronomical body containing a significant amount of liquid water, not necessarily on the surface.
Oceana proper noun: An unincorporated community in Virginia Beach, Virginia, United States.
oceanarium noun /ˌəʊ.ʃəˈnɛəɹi.əm/: A park where visitors can see marine mammals and/or fish.
oceanaut noun: An explorer in a submarine.
oceanbed noun: Synonym of seabed.
oceanborne adjective: transported over an ocean
oceanet noun: A small ocean.
oceanfarer noun: Someone who travels on the ocean
oceanfront adjective, noun: Of property or real estate: adjacent to the ocean.
oceanful noun: The amount that an ocean can hold.
oceangoing adjective: Travelling out to sea.
Oceania proper noun /ˌəʊ.ʃiˈɑː.nɪə/: A continental region composed of the islands of the central and southern Pacific Ocean, principally divided into Melanesia, Micronesia and Polynesia.
Oceanian adjective, noun: From or relating to Oceania (geographical region or continent).
Oceanianism noun: A characteristically Oceanian cultural feature, such as a belief, custom or linguistic feature.
Oceanianist noun: An expert in the study of Oceania.
oceanic adjective /ˌəʊʃiˈænɪk/: Of or relating to the ocean.
oceanic abyss noun: A long steep-sided depression in the ocean floor.
oceanic crust noun: The thin, dense outermost layer of Earth's lithosphere beneath the oceans.
oceanic dolphin noun: Any dolphin of the family Delphinidae.
oceanic trench noun: A hemispheric-scale long but narrow topographic depression of the seabed.
oceanic whitetip noun: Ellipsis of oceanic whitetip shark.
oceanic whitetip shark noun: a large pelagic shark, taxonomic name Carcharhinus longimanus, characterized by the white tips on the fin, often prone to attack humans.
oceanically adverb: In an oceanic manner; in a way that suggests or involves the ocean.
Oceanican adjective, noun: Oceanian
Oceanicist noun: A linguist who specialises in studying Oceanic languages.
oceanicity noun: The condition or degree of being oceanic.
Oceanid noun /əʊˈsiːənɪd/: Any of the daughters of Oceanus and Tethys; a sea-nymph.
oceanite noun: A variety of picrite that is chiefly composed of olivine phenocrysts.
oceanitid noun: Any member of the family Oceanitidae of southern storm petrels or Austral storm petrels.
oceanity noun: Synonym of oceanicity.
oceanium noun: A supposed chemical element, thought to be the one with atomic number 72 (now known as hafnium), but later identified as a mixture of aluminium, iron, and...
oceanization noun: The process of formation of an ocean after continental rifting.
oceanize verb: To cover in ocean.
oceanless adjective: Without an ocean.
oceanlike adjective: Relating to an ocean in vastness or composition.
oceanliner noun: Alternative spelling of ocean liner.
Oceano proper noun: A census-designated place in San Luis Obispo County, California, United States.
oceanodromous adjective: that migrate within the seas only
oceanog noun: Abbreviation of oceanography.
oceanographer noun /ˌoʊʃəˈnɑɡɹəfəɹ/: a person who studies oceanography, the science of oceans
oceanographic adjective /ˌoʊʃənəˈɡɹæfɪk/: relating to oceanography, the science of oceans
oceanographical adjective: Of or pertaining to oceanography, the science of oceans.
oceanographically adverb: In terms of oceanography.
oceanographist noun: An oceanographer.
oceanography noun /ˌəʊʃjəˈnɒɡɹəfi/: The exploration and scientific study of the oceans and ocean floor.
oceanologic adjective: Relating to oceanology.
oceanological adjective: Of or pertaining to oceanology.
oceanologically adverb: In terms of oceanology.
oceanologist noun: One who studies oceanology.
oceanology noun: oceanography
oceanophyte noun: an oceanic plant or plant life which exists in oceans
Oceanport proper noun: A borough in Monmouth County, New Jersey, United States.
oceanside adjective, adverb, noun: Located on the coast of an ocean.
Oceanus proper noun /oʊˈsiːənəs/: Personification of vast waters or the world ocean. He was the first-born of the Titans, son of Uranus and Gaia, the god Ωκεανός Ποταμός (Ōkeanós Potamós,...
oceanview adjective, noun: Overlooking the ocean
oceanward adjective, adverb: Toward the ocean.
oceanwards adjective, adverb: Alternative form of oceanward.
oceanwater noun: The water of the ocean.
oceanway noun: Synonym of seaway (“lane or route used by ships at sea”).
oceanwide adjective: Spanning the whole ocean
oceanwise adverb: Towards or along an ocean.
oceanworthy adjective: Synonym of seaworthy.
oceany adjective /ˈəʊ.ʃə.ni/: Characteristic of the ocean.
ocebob noun: A hybrid of an ocelot and a bobcat.
ocellar adjective: of or relating to the ocellus or ocelli
ocellary adjective: of or relating to the ocellus or ocelli
ocellate adjective: ocellated
ocellated adjective: Of, pertaining to, resembling or having an ocellus.
ocellated crake noun: a bird from the family Rallidae, Micropygia schomburgkii.
ocellated lizard noun: Timon lepidus (syn. Lacerta lepida), a large wall lizard.
ocellated turkey noun: An American turkey of species Meleagris ocellata.
ocellation noun: The development of eye-like markings, such as those on the wing of a butterfly or tail of a peacock.
ocelliferous adjective: Having spots like small eyes.
ocelliform adjective: Shaped like an ocellus.
ocelligerous adjective: ocelliferous
ocelloccipital adjective: Relating to the ocellus and the occiput
ocellocular adjective: Relating to the ocellus and the eye
ocelloid noun: a cellular structure found in unicellular microorganisms that is analogous in structure and function to eyes, which focus, process and detect light
ocellorbital adjective: Relating to the ocellus and the orbit of the eye
ocellularioid adjective: Describing the apothecial and thallus morphology characteristic of corticolous thelotremoid lichens
ocellus noun /əʊˈsɛləs/: A simple eye consisting of a single lens and a small number of sensory cells.
oceloid adjective: Resembling the ocelot.
ocelot noun /ˈɒsəlɒt/: An American feline carnivore (Leopardus pardalis, syn. Felis pardalis) covered with blackish ocellated spots and blotches which are variously arranged.
ocfentanil noun: An opioid analgesic.
OCG noun: Initialism of organised crime group.
och interjection, noun /ɒx/: general interjection of confirmation, affirmation, and often disapproval.
och aye interjection: yes, OK; used to state agreement
och aye the noo interjection: A stereotypical phrase said in mock imitation of Scottish people.
ocha noun: Japanese tea, usually green tea.
ochanee interjection: Expressing regret or sorrow.
ochava noun: A traditional Spanish unit of mass, equivalent to about 3.6 g.
ochavo noun: A former Spanish coin from the 17th to 19th centuries.
ochazuke noun: Alternative form of chazuke.
ochdamh noun: An obsolete Scots unit equal to ¹⁄₈ daugh, notionally comprising 50 Scottish acres.
oche noun /ˈɒki/: A line behind which a player's front foot must be placed when throwing a dart.
ochem noun: Alternative form of O-chem.
ocher noun, verb /ˈoʊkɚ/: Alternative spelling of ochre.
ocheraceous adjective: Alternative form of ochraceous.
ocherish adjective: Alternative form of ochrish.
ocherous adjective: Alternative form of ochrous.
ochery adjective: ochrous
Ochiltree proper noun: A village in East Ayrshire council area, Scotland (OS grid ref NS5021).
ochl- prefix /ɒ.kl/: Alternative form of ochlo-, used before a suffix beginning with a vowel.
ochlagogue noun /ˈɒkləɡɒɡ/: A manipulator of a mob who holds sway by use of inflammatory rhetoric, casting opprobrium, and by appeal to the lowest common denominator generally; an...
ochlagogy noun /ˈɒkləˌɡɒd͡ʒi/: Manipulation of a mob by use of inflammatory rhetoric, casting opprobrium, and by appeal to the lowest common denominator generally; extreme and wholly...
ochlarchy noun: mob rule
ochlesid noun: Any member of the family Ochlesidae of small shrimp-like crustaceans.
ochlesis noun: Crowd-poisoning; a disease occasioned or aggravated by overcrowding, especially due to lack of ventilation.
ochletic adjective /ɒkˈlɛtɪk/: Relating to ochlesis.
ochlo- prefix: Crowd, mob.
ochlocracy noun /ɒkˈlɒk.ɹə.si/: Mob rule; government by the masses; mobocracy.
ochlocrat noun /ˈɒkləkɹæt/: An adherent of the principle of ochlocracy; an advocate of mob rule.
ochlocratic adjective: Pertaining to ochlocracy.
ochlocratical adjective: Pertaining to ochlocracy.
ochlocratically adverb: In an ochlocratic way.
ochlology noun: the psychology of crowds or mobs
ochlophilia noun: A love of crowds or crowded places
ochlophobe noun: A person having a fear of crowds.
ochlophobia noun: A phobia, or fear, of mob-like crowds, as opposed to simply open spaces like agoraphobia or large crowds as with enochlophobia.
ochlophobiac noun: Synonym of ochlophobe.
ochlophobic adjective, noun: Having an aversion to crowds.
ochlophobist noun: A person with a phobia, or fear, of mob-like crowds, as opposed to simply open spaces like agoraphobia or large crowds as with enochlophobia.
ochlospecies noun: A taxonomic species concept characterized by large amounts of variation that is not correlated with geography or ecology; usually geographically widespread...
ochna noun: Any of the genus Ochna of evergreen trees, shrubs and shrublets.
ochnaceous adjective: Belonging to the family Ochnaceae.
ochnaflavone noun: A particular biflavonoid found in the plant Ochna squarrosa.
Ochoa proper noun /oʊˈt͡ʃoʊə/: A surname.
Ochoa syndrome noun: A congenital disorder characterized by an association of a lower urinary tract and bowel dysfunction with a typical facial expression: when attempting to...
ochodaeid noun: Any beetle in the family Ochodaeidae.
ochoko noun: Synonym of choko (“handleless cup for saké”).
ochone interjection: Expresses woe or sorrow.
ochorina noun: Alternative spelling of ocarina.
ochotonid noun: Any member of the family Ochotonidae, the pikas.
ochraceous adjective: Ochre-colored.
ochraceous attila noun: A bird native to South America, Attila torridus
ochratoxicosis noun: toxicosis by an ochratoxin
ochratoxigenic adjective: That produces ochratoxins
ochratoxin noun: Any of a class of mycotoxins, having an isocoumarin structure, produced by some fungi of the genus Aspergillus and others
ochre adjective, noun, verb /ˈəʊkə/: A clay earth pigment containing silica, aluminum and ferric oxide.
ochre-bellied boobook noun: A species of boobook owl, Ninox ochracea, endemic to Sulawesi and nearby islands in Indonesia.
ochrea noun: Alternative form of ocrea.
ochreal adjective: Alternative form of ocreal.
ochreasteroside noun: A particular steroid glycoside.
ochreate adjective: Provided with ocreae, or sheath-formed stipules, such as found in the rhubarb, yellow dock, and knotgrass.
ochred adjective, verb: Painted or coloured with ochre.
ochreish adjective: Having an ochre-like color
ochreous adjective: Alternative form of ochrous.
ochrephilone noun: The chromenone (6aR,9R,9aR)-9-acetyl-3-[(1E,3E,5S)-3,5-dimethylhepta-1,3-dienyl]-6a-methyl-9,9a-dihydrofuro[2,3-h]isochromene-6,8-dione
ochrept noun: A particular type of inceptisol.
ochrey adjective: Alternative form of ochery.
ochric adjective: Either too thin, too light in colour, or too low in organic matter to be considered either mollic or umbric.
ochrish adjective: Having an ochre-like color.
ochrobactin noun: A siderophore produced by bacteria of the genus Ochrobactrum
ochroid adjective: Resembling or containing ochre.
ochroleucous adjective: Yellowish-white; having a faint tint of dingy yellow
ochronosis noun /ˌəʊ.kɹə(ʊ)ˈnəʊ.sɪs/: Abnormal brown pigmentation of tissue (especially cartilage and ligaments), specifically that resulting from the accumulation of a melanin-like pigment...
ochronotic adjective: Having or pertaining to ochronosis.
ochrophyte noun: Any heterokont of the phylum Ochrophyta
ochrosol noun: A deeply-weathered latosol
ochrous adjective /ˈəʊkɹəs/: Containing ochre.
ochry adjective: Alternative form of ochery.
Ochs proper noun: A surname.
Ochsner proper noun: A surname from German.
ochterid noun: Any insect in the family Ochteridae.
ochyroceratid noun: Any spider in the family Ochyroceratidae.
OCI noun: Initialism of Overseas Citizen of India.
Ocicat noun: A domestic cat of a breed that is spotted like a wild cat, established from Siamese and Abyssinian stock.
ocify verb /ˈəʊ.siː.faɪ/: To make into an original character.
Ocilla proper noun: A city, the county seat of Irwin County, Georgia, United States.
ocimene noun: Any of several isomeric monoterpenes found in many plants
Ocimibundu noun: A member of the southern Mbundu, a Bantu ethnic group living on the Bié Plateau of central Angola and in the coastal strip west of these highlands.
ocinaplon noun: A particular kind of anxiolytic pyrazolopyrimidine drug.
ocivity noun: Alternative form of oisivity.
ock interjection, noun, suffix: Forming nouns from nouns, originally with a diminutive sense.
ockard adjective: Pronunciation spelling of awkward.
Ockelbo disease noun: Pogosta disease
Ockenden proper noun: A village near Cuckfield, West Sussex
Ockendon proper noun /okɪndən/: An area which straddles the boundary between Greater London and Essex, England; North Ockendon is in Greater London and South Ockendon in Essex.
ocker adjective, noun, verb /ˈɒkə/: Interest on money; usury; increase.
ockerd adjective: Pronunciation spelling of awkward.
ockerdom noun: The world or sphere of ockers (boorish, uncultivated Australians).
ockerer noun: A usurer.
ockerette noun: A female ocker (boorish, uncultivated Australian).
ockerina noun: Synonym of ockerette.
ockerish adjective: Resembling or characteristic of an ocker (boorish, uncultivated Australian).
ockerism noun: The manners or habits of ockers.
Ockham proper noun: A rural and semirural village and civil parish in Guildford borough, Surrey, England (OS grid ref TQ0756).
Ockham algebra noun: A bounded distributive lattice with a dual endomorphism (where “dual” means that it satisfies De Morgan’s laws).
Ockhamism noun: A nominalist school of philosophical thought founded by William of Ockham in the 14th century.
Ockhamist noun: A follower of Ockhamism.
Ockhamistic adjective: Of or pertaining to William of Ockham, 13th-14th century English Franciscan friar and scholastic philosopher.
Ockley proper noun: A village and civil parish in Mole Valley district, Surrey, England (OS grid ref TQ1440).
ocky adjective, noun: Alternative form of occy (“octopus”).
ocky strap noun: Alternative form of occy strap.
oclacitinib noun: A veterinary medication belonging to the class of Janus kinase inhibitors, used for the treatment of atopic dermatitis in dogs.
OCMT noun: Initialism of original currency and amount, describing payments between banks, in messages using the SWIFT standard.
Ocmulgee proper noun: A western tributary of the Altamaha River, in the U.S. state of Georgia.
OCN noun: Initialism of OCLC control number.
ocnophil noun: A personality type characterised by avoidance of dangerous of unfamiliar situations, and the reliance on other people for security.
ocnophilic adjective: Relating to, or characteristic of an ocnophil (someone who tends to avoid dangerous or unfamiliar situations).
OCO noun: Initialism of one cancels other, a type of order.
Ocoee proper noun: A city in Orange County, Florida, United States.
ocoid noun: Any member of the Ocoidae.
Ocon proper noun: A surname from Spanish.
Oconee proper noun: A small city in Washington County, Georgia, United States.
Oconee bells noun: Shortia galacifolia, a rare plant of the Southern Appalachians in the family Diapensiaceae.
Oconomowoc proper noun: A city and town in Waukesha County, Wisconsin, United States.
Oconto proper noun: A village in Custer County, Nebraska, United States.
OCONUS prepositional phrase: Acronym of outside [the] contiguous United States, i.e. Alaska, Hawaii, the US territories, and all other countries.
ocote noun: Any of various pine trees of Latin America.
ocotillo noun /əʊkəˈtɪləʊ/: Any of various succulent plants, not closely related to the cactus, in genus Fouquieria, especially Fouquieria splendens, living in Central America or the...
OCP noun: Initialism of oral contraceptive pill.
OCPD noun: Initialism of obsessive-compulsive personality disorder.
ocque noun: Alternative form of oka (“weight unit”)
OCR noun, verb: Initialism of optical character recognition (the technology or principle).
OCRable adjective: Able to be accurately scanned by OCR (optical character recognition).
Ocracoke proper noun: An island of North Carolina, United States.
Ocracoker noun: A resident of Ocracoke Island, North Carolina.
ocracy noun, suffix: Alternative form of -cracy, most often used following a consonant.
-ocratic suffix: Alternative form of -cratic.
ocrea noun: A sheath around a plant stem forming from the stipule of a leaf and extending above the point of insertion of the leaf.
ocreaceous adjective: Relating to, or having the form of an ocrea
ocreal adjective: Relating to the ocrea.
ocreate adjective: Alternative form of ochreate.
ocreated adjective: Alternative form of ocreate.
ocrelizumab noun: A humanized monoclonal antibody with possible applications as an immunosuppressive drug.
ocriflavine noun: flavin
ocriplasmin noun: A recombinant protease, having activity against fibronectin and laminin, which is used in the treatment of vitreomacular adhesion
OCS noun: Initialism of Office of Contract Settlement.
oct noun, prefix: Form of octa- or octo- used before a vowel.
octa noun, prefix: Eight.
octaacetate noun: Any compound that has eight acetate groups (typically of a sugar)
octaatomic adjective: Alternative form of octatomic.
octaazacubane noun: A theoretical molecule composed of eight (8) nitrogen atoms only, in a cubic configuration, with each nitrogen (N) atom being a vertex on the cube, and...
octaazamacrocycle noun: Any macrocycle that contains eight nitrogen atoms.
octabasic adjective: containing eight replaceable hydrogen atoms
octabenzone noun: An ultraviolet absorber/screener, used to protect polymers against damage by UV light.
octabin noun: A large, octagonal (eight-sided) corrugated bulk container, typically placed on a pallet, used for storing, shipping, and handling large quantities of...
octabromide noun: any bromide containing eight bromine atoms in each molecule
octabromo noun: Eight bromine atoms in a molecule
octabromodiphenyl ether noun: A brominated flame retardant with the molecular formula C₁₂H₂Br₈O.
octabromoporphyrin noun: Any octabromo derivative of a porphyrin, some of which may be used in the spectrophotometric determination of lithium
octacaine noun: An anesthetic drug.
octacalcium noun: Eight calcium atoms or ions in a compound
octacarbide noun: Any carbide containing eight carbon atoms per molecule
octacarbonate noun: Any compound containing eight carbonate groups in each molecule or unit cell
octachloride noun: Any chloride containing eight chlorine atoms in each molecule.
octachlorobiphenyl noun: Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms
octachlorodibenzofuran noun: The toxic perchloro derivative of dibenzofuran 1,2,3,4,6,7,8,9-octachlorodibenzofuran
octachord noun: A musical instrument with eight strings.
octachoron noun: A four-dimensional object analogous to a cube, constructed out of eight cubes.
octachotomy noun: The division of one into eight separate but related parts.
octacistronic adjective: Relating to or composed of eight cistrons.
octacontagon noun: A polygon with eighty sides and eighty angles.
octacontane noun: Any saturated aliphatic hydrocarbon that has 80 carbon atoms, but especially n-octacontane
octacoordinated adjective: coordinated with eight ligands
octacopper noun: Eight atoms of copper in a chemical compound.
octacore adjective: Composed of eight cores.
octacosadienoate noun: Any salt or ester of an octacosadienoic acid
octacosane noun: Any of very many isomers of the aliphatic hydrocarbon having 28 carbon atoms, but especially n-octacosane CH₃(CH₂)₂₆CH₃
octacosanoate noun: Any salt or ester of octacosanoic acid
octacosanoic adjective: Of or pertaining to octacosanoic acid or its derivatives; montanic
octacosanoic acid noun: montanic acid
octacosanol noun: Any aliphatic alcohol derived from octacosane, but especially 1-octacosanol that is found in plant waxes
octacosenoate noun: Any salt or ester of an octacosenoic acid
octacosenoic acid noun: Any aliphatic carboxylic acid that has twenty-eight carbon atoms and one double bond
octactinal adjective: Of a sponge spicule: having eight rays.
octactinian noun: Any anthozoan coral of the former subclass Octactinia
octacube noun: 24-cell
octacyanomolybdate noun: The anion Mo(CN)₈⁴⁻; any salt containing this anion
octacyclic adjective: Having eight rings (of atoms)
octad noun /ˈɒktæd/: A group of eight things.
octadec- prefix: Alternative form of octadeca- used before a vowel.
octadeca- prefix: eighteen
octadecacopper noun: Eighteen atoms of copper in a chemical compound.
octadecadienoate noun: Any salt or ester of octadecadienoic acid.
octadecadienoic adjective: Of or pertaining to octadecadienoic acid or its derivatives; linoleic.
octadecadienoic acid noun: linoleic acid
octadecadienoyl noun: The univalent radical derived from octadecadienoic acid by loss of the hydroxy group
octadecafluorooctane noun: Synonym of perfluorooctane.
octadecagon noun: A polygon with 18 sides and 18 vertices.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0): each word's first meaning. A word with a page of its own links to it; for the rest, this line is PlainSpell's entry. Total under O: 20,049 words, in 67 parts.