Spanish words starting with O:

Full list of spanish words that start with the letter O according to the Spanish dictionary. Search and filter them as you like. Find the translation in English behind the Spanish word.

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Spanish wordmeaning in Englishfeatures
óor (once used instead of o near numerals to avoid confusion with a zero: 2 ó 3){conj}
A suffix indicating the third-person singular indicative preterite of a verb{suffix}
óleooil{m}
ómicronomicron; the Greek letter Ο, ο{f}
ómnibuspublic bus{m}
-ónending of every chemical element belonging only to the noble gases group, except helium (in spanish helio){suffix} [chemistry]
-ónemphasizes contempt for subject{suffix}
-ónemphasizes that something is large, grand, intense, important{suffix}
-ónfor few cases, indicates that something is used wrong or frequently (forming adjectives and or nouns){suffix}
-ónforms a noun from a different (usually larger) but related or similar one{suffix}
-ónfor very few cases, indicates small size of or a lack of something (such as an ironic augmentative){suffix}
-ónindicates that someone or something has large attributes, or larger than usual{suffix}
-ónending of most or every subatomic particle{suffix} [nuclear physics]
-ónsuffixed to verbs, doing something repeatedly or often{suffix}
ónfalosomphalos{m}
-ónimo-onym{suffix}
ónixonyx{m}
oeither ... or{conj}
oor{conj}
oName of the letter O{f}
oThe 16th letter of the Spanish alphabet{letter}
-oSuffix indicating the first-person singular present indicative of verbs{suffix}
OThe 16th letter of the Spanish alphabet{letter}
OAOaxaca (Mexican state){abbr}
OaxacaA state of Mexico{prop}
oaxaqueñoOf or pertaining to the Mexican state of Oaxaca{adj}
obcecadostubborn, obsessed{adj}
obedecerto be because of{v}
obedecerto obey{v}
obedienciaobedience{f}
obedienteobedient{adj}
obeliscoobelisk{m}
obesaAn obese woman{f}
obesidadobesity (state of being obese){f}
obesoobese{adj}
obesoAn obese person{m}
obispadobishopric{m}
obispalepiscopal{adj}
obispobishop{m}
obituarioobituary{m}
objeciónobjection{f}
objetarto object{v}
objetivamenteobjectively{adv}
objetividadobjectivity{f}
objetivoobjective{adj}
objetivoaim{m}
objetoobject{m}
objetorconscientious objector{m}
objetorobjector{m}
objetor de concienciaconscientious objector{m}
objeto volador no identificadounidentified flying object (all senses){m}
oíbleaudible{adj}
obleawafer (biscuit or in electronics){f}
obligaciónobligation{f}
obligadocoerced, forced{adj}
obligadocommitted{adj}
obligarto oblige, force, obligate{v}
obligatoriomandatory{adj}
obligatorioobligatory{adj}
obliterarto obliterate, to null, to erase{v}
oblongooblong{adj}
obnubilarto daze{v}
oboeoboe{m} [musical instruments]
obraconstruction{f}
obrawork, usually literary or artistic{f}
obra de artework of art, objet d'art{f}
obrarto produce{v}
obrerafeminine form of obrero{f}
obreroworker{m}
obscenidadobscenity{f}
obscenoobscene{adj}
obscuroobscure, dark{adj}
obsequiarto present{v}
obsequiosoobsequious{m}
observaciónobservation{f}
observadorobservant{adj}
observadorobserving{adj}
observadorobserver{m}
observadorafeminine form of observador{f}
observarto observe{v}
observatorioobservatory{m}
obsesiónobsession{f}
obsesionadoobsessed{adj}
obsesionadopossessed{adj}
obsesionarto obsess{v}
obsesivafeminine form of obsesivo{adj}
obsesivoobsessive{adj}
obsidianaobsidian{f}
obsolescenteobsolescent{adj}
obsoletoobsolete, outdated{adj}
obstantehindering{adj}
obstanteobstructing{adj}
obstarto hinder{v}
obstáculoobstacle{m}
obstetriciaobstetrics{f}
obstinaciónobstinacy{f}
obstinadostubborn{adj}
obstinarto be obstinate{v}
obstrucciónobstruction{f}
obstruirto obstruct{v}
obtenerto obtain{v}
obtusoobtuse{adj} [geometry]
obtusoobtuse (blunt){adj}
obtusoobtuse (intellectually dull){adj}
obviamenteobviously{adv}
obviarto avoid{v}
obviarto obviate{v}
obvioobvious, clear{adj}
ocagoose{f}
océanoocean{m}
océano AtlánticoAtlantic Ocean (the ocean lying between the Americas to the west and Europe and Africa to the east){prop}
Océano ÍndicoIndian Ocean{prop}
Océano PacíficoPacific Ocean{prop}
ocarinaocarina{f}
ocasiónoccasion{f}
ocasionaloccasional{adj}
ocasionalmenteoccasionally{adv}
ocasionarto cause{v}
ocasowest{m} [geography]
ocasodecline{m} [literary]
ocasosunset{m}
occidentalwestern{adj}
occidentalizaciónwesternization{f}
occidentalizarto westernize{v}
occidentewest, occident{m}
occiduoWestern, occidental{adj} [poetic, literary]
occipitaloccipital{adj} [anatomy]
occipital(muscle) occipitalis{m}
occipitaloccipital bone{m}
occipitaloccipital lobe{m}
occipitofrontaloccipitofrontal{adj} [anatomy]
occipitofrontaloccipitofrontalis, occipitofrontalis muscle{m}
occitanoOf or relating to Occitania or the Occitan language{adj}
occitanoPerson from or inhabitant of Occitania{m}
occitanoOccitan (the Romance language){prop}
OceaníaOceania{prop}
oceanógrafooceanographer{m}
oceanográficooceanographic{adj}
oceloteocelot{m}
oceánicooceanic{adj}
ochentaeighty{cardinal num} [cardinal]
ochenta y cincoeighty-five{num}
ochoeight{cardinal num} [cardinal]
OchoaSpanish surname{prop}
ochocientasfeminine form of ochocientos{num}
ochocientoseight hundred{num}
ociodiversion{m}
ocioleisure, recreation, spare time{m}
ociosidadidleness, inactivity{f}
ociosoidle{adj}
ociosoidler{m}
oclocraciaochlocracy{f}
oclocráticoochlocratic{adj}
ocoteAny of several aromatic, resinous pine species native to Mexico and Central America, especially the Montezuma pine (Pinus montezumae){m} [El Salvador, Guatemala, Honduras, Mexico, Nicaragua]
ocotilloocotillo{m} [Mexico]
ocraokra{m} [El Salvador]
ocreochre{m}
octagonaloctagonal{adj}
octanajeoctane rating{m}
octanooctane{m} [organic compound]
octavaoctave{f} [music]
Octaviomale given name{prop}
octavoeighth{adj}
octavoeighth{m}
octetooctet{m}
octágonooctagon{m} [geometry]
octingentésimoeight hundredth{adj}
octodecágonooctadecagon{m} [geometry]
octogenariooctogenarian{adj}
octogenariooctogenarian{m}
octogésimoeightieth{adj} [ordinal]
octogésimoeightieth{m}
octópodooctopod (eight-legged){adj}
octópodooctopod{m}
octubreOctober{m}
ocularocular{adj}
oculareyepiece, eyeglass{m}
ocularmenteocularly, visually, through the use of sight{adv}
ocultaciónoccultation{f}
ocultarto hide{v}
ocultarseto be hidden{v}
ocultarseto hide{v}
ocultooccult{adj}
ocupaciónoccupation (all senses){f}
ocupacionaloccupational{adj}
ocupadobusy{adj}
ocupadooccupied{adj}
ocupanteoccupying{adj}
ocupanteoccupant{mf}
ocuparto go about{vr}
ocuparto pay attention to{vr}
ocuparto employ{v}
ocuparto occupy{v}
ocuparto use{v}
ocurrenciaoccurrence{f}
ocurrenteoccurrent{adj}
ocurrentesaying, meaning, showing or doing unexpected things{adj}
ocurrirto happen, to occur{v}
odaode{f}
odiarto hate{v}
odiohate{m}
odiosohateful, odious{adj}
odiseaodyssey{f}
oídoear (Specially the inner part of this){m}
oídohearing{m}
odontalgiatoothache{f} [medicine]
odontólogoodontologist; dentist{m}
odontologíaodontology; dentistry{f}
odoríferoodorous, odoriferous{adj}
odoríferosmelly{adj}
odregoatskin, goatskin wine bag{m}
OEAOrganización de los Estados Americanos: OAS{initialism}
oestewest{m}
Ofeliafemale given name, equivalent to Ophelia{prop}
ofendainsult{f}
ofenderto offend{v}
ofendidoaggrieved{adj}
ofensainsult{f}
ofensaoffense{f}
ofensivaoffensive{f}
ofensivooffensive{adj}
ofertaoffer{f}
ofertarto offer{v}
oficialofficial{adj}
oficialartisan{mf}
oficialbutcher{mf}
oficialclerk, functionary{mf}
oficialexecutioner{mf}
oficialofficer, official{mf}
oficialoffice worker, skilled workman{mf}
oficialidadofficiality{f}
oficialismoruling party{m}
oficializarto make official{v}
oficialmenteofficially{adv}
oficiarto officiate{v}
oficinalaboratory{f}
oficinaoffice{f}
oficinaworkshop{f}
oficinistaoffice worker{mf}
oficioprofession, occupation{m}
ofidioophidian{adj}
ofidioophidian{m}
ofrecerto offer{v}
ofrecidoeasy (A person who readily consents to sexual activity){adj}
ofrecimientooffering, offer{m}
ofrendaoffering, sacrifice{f}
ofrendarto offer as a gift, to sacrifice{v}
oftalmóloga(female) ophthalmologist{f}
oftalmólogoophthalmologist{m}
oftalmologíaopthalmology{f}
oftalmoscopioophthalmoscope{m}
ofuscaciónbewilderment, confusion{f}
ofuscaciónblurring{f}
ofuscaciónobfuscation (lack of clarity){f}
ofuscarto confuse{v}
ofuscarto obfuscate{v}
ogrocrank{m}
ogrofiend, brute{m}
ogroogre{m}
ohoh (expression of awe, surprise, pain or realization){interj}
oh, Dios míooh my God{phrase}
OhioOhio{prop}
ohmioohm{m}
-oide-oid{suffix}
oidorjudge, magistrate for a royal audiency{m} [archaic]
oidorhearer{m}
ojaláhopefully (I hope that){adv}
ojaláGod grant (that) (followed by present subjunctive){interj}
ojaláGod willing{interj}
ojaláI hope so; let’s hope so{interj}
ojaláI hope (that); let’s hope (that) (followed by present subjunctive){interj}
ojaláI wish (when used to refer to past events){interj}
ojaláLet's hope that{interj}
ojalbuttonhole{m}
ojalloop{m}
ojeadaglance (brief look){f}
ojearto ogle{v}
ojearto put the evil eye (on somebody), to curse by looking with malicious intents{v}
ojeracoon eyes{f}
ojeteanal orifice{m} [Argentina]
ojeteanus{m} [colloquial]
ojeteeye hole{m}
ojeteeyelet{m}
ojetewicked, mean, bad person{m} [Mexico]
ojeteasshole{m} [slang as epithet]
ojialegrelaughing-eyed{adj}
ojimorenodark-eyed, brown-eyed{adj}
ojinegrodark-eyed, black-eyed{adj}
ojitodiminutive form of ojo{m}
ojituertocross-eyed, cock-eyed{adj}
ojivaogive{f}
ojivawarhead{f}
ojónHaving big or very open eyes{adj}
ojónA particular fish, having very large eyes{m}
ojónSomeone with big or very open eyes{m}
ojolook! watch out!{interj}
ojoeye{m}
ojo de aguaspring{m}
ojotaflip-flop (artisanal type){f} [Chile, Argentina, Peru]
OklahomaOklahoma{prop}
okupasquatter; squat{mf} [slang, Spain]
okupaciónsquatting{f} [slang, Spain]
okupadosquatted{adj} [slang, Spain]
okuparto squat{v} [slang, Spain]
oléAn expression of encouragement and approval{interj}
olasudden appearance of a large amount of something{f} [figuratively]
olawave (on the surface of a liquid){f}
ola de calorheat wave, hot spell{f}
olaliaolallieberry{f}
olíbanofrankincense{m}
oleadawave{f}
oleajesurf{m} [hydrography]
oleatooleate{m}
oleicooleic{adj}
oleoductooil pipeline{m}
oleoplastooleoplast{m} [cytology]
olerto smell, to emit an odour{vi}
olerto smell, to perceive by scent{vt}
olerse la tostadato smell a rat{v} [idiomatic]
oleuropeínaoleuropein{f} [organic compound]
oleyliberiolallieberry{f}
olfatearto sniff{v}
olfativoolfactory{adj}
olfatosmell, olfaction, sense of smell (sense that detects smells){m}
olfatorioolfactory{adj}
Olgafemale given name{prop}
oligarquíaoligarchy{f}
oligonucleótidooligonucleotide{m} [biochemistry]
oligosacáridooligosaccharide{m} [carbohydrates]
olimpíadaolympiad{f}
olimpíadaOlympics{f}
olimpiadaolympiad{f}
oliosee óleo{m}
olisquearto sniff at{v}
olivaolive (fruit){f} [context needed, comment=where is this used vs. aceituna?]
olivarolive color{adj}
olivarolive grove{m}
olivinoolivine (family of minerals){m}
olivoolive tree{m}
ollaa pool, a whirlpool{f}
ollaa pot or pan; a kettle{f}
ollaa stew{f}
olmecaOlmec{adj}
olmecaOlmec{mf}
olmoelm{m}
olímpicoolympic{adj}
olímpicoOlympian{m}
olorsmell, scent{m}
olorosoodorous{adj}
olorososweet (having a pleasant smell){adj}
olotecorncob{m} [Central America, Mexico]
OlteniaOltenia{prop}
olvidadizoforgetful{adj}
olvidadoforgotten{adj}
olvidarto forget{v}
olvidoforgetting, ending of memory{m}
olvidoIdea meaning an abstract place to put what is wanted to be forgotten{m}
olvidooblivion{m}
-oma-oma{suffix} [pathology]
omaníOmani{adj}
omaníOmani{mf}
Omarmale given name{prop}
ombúA large evergreen tree native to the Pampa of South America, Phytolacca dioica{m}
ombligonavel (remnant of umbilical cord){m}
ombreobsolete spelling of hombre{m}
OMCinitialism of Organización Mundial de Comercio (WTO (World Trade Organisation)){initialism}
omegaomega; the Greek letter Ω, ω{f}
ominarto omen{v}
omisiónomission{f}
omisoneglectful, careless{adj}
omitirto omit{v}
OmánOman (country in the Middle East){prop}
omnipotenciaomnipotence (unlimited power){f}
omnipresenciaomnipresence{f}
omnipresenteomnipresent{adj}
omniscienciaomniscience{f}
omóplatoscapula{m}
OMSOrganización Mundial de la Salud; WHO{initialism}
-onafeminine form of -ón{suffix}
onagroonager (military engine){m}
onagroonager (wild ass){m}
onceeleven{cardinal num} [cardinal]
oncesnack (bread with tea or coffee){f} [Latin American Spanish]
oncólogooncologist (one who specialises in oncology){m}
oncologíaoncology (branch of medicine){f}
ondaAny other wave (including technological use){f}
ondastyle, fashion{f} [Chile]
ondavibe or mood{f}
ondawave (on the surface of a liquid){f}
onda acústicasound wave{f}
onda electromagnéticaelectromagnetic wave{f}
onda senoidalsine wave{f} [trigonometry]
onda sonorasound wave{f}
onda verdegreen wave{f}
ondearto undulate{v}
ondularto wave{v}
ondulatorioundulating{adj}
ondulatoriowave (attributive, physics){adj}
onerosoonerous{adj}
ONGNGO (non-governmental organisation){initialism}
onomatopeyaonomatopoeia{f}
onomatopéyicoonomatopoeic{adj}
oníricooneiric{adj}
ontogeneticafeminine form of ontogenetico{adj}
ontogeneticoontogenetic, ontogenic{adj} [biology]
ontogeniaontogeny{f}
ontologíaontology{f}
ONUinitialism of Organización de las Naciones Unidas (UNO (United Nations Organization)){initialism} [politics, government]
onzaounce{f}
onzaounce; snow leopard{f}
oolitooolite{m} [geology]
oolíticooolitic{adj} [geology]
ootecaootheca{f}
opacidadopacity{f}
opciónoption{f}
opcionaloptional{adj}
openopen{m} [sports]
O.P.E.P.organización de los países exportadores de petróleo, OPEC{acronym}
operaciónoperation{f} [computing, mathematics]
operacionaloperational, effective, operative{adj}
operacionalworking{adj}
operadoroperator{m}
operadorafeminine form of operador, (female) operator{f}
operarto operate{v}
operariaworking woman{f}
operariooperative{m}
operarioworkman{m}
operativooperative{adj}
operativooperation{m}
operetaoperetta{f} [music]
opiáceoopiate{adj}
opimorich, fertile, lush{adj}
opinarto express one's opinion; to opine{v}
opinarto think; to be of the opinion{v}
opiniónopinion{f}
opioopium{m}
opioideopioid{adj}
opioideopioid{m}
oponenteopponent{mf}
oponerto be opposed, to be in opposition{vr}
oponerto pit (one thing against another); to set in opposition{vt}
oponerto put up (resistance etc.){vt}
oponerseto oppose one another{vr}
oportoport wine{m}
OportoOporto{prop}
oportunamenteopportunely, timely{adv}
oportunidadopportunity (in both senses: “chance for advancement, progress or profit” and “favorable circumstance or occasion”){f}
oportunismoopportunism{m}
oportunistaopportunist{f}
oportunoopportune{adj}
oportunosuitable, appropriate{adj}
oposiciónopposition{f}
opositoropponent{m}
opresiónoppression{f}
oprimirto oppress{v}
oprimirto press (e.g., a button or key on a telephone or keyboard){v}
oprobioopprobrium{m}
opsacknowledgment of a minor mistake, oops{m}
opúsculoopuscule, tract, short essay{m}
opsoninaopsonin{f} [biology]
optarto opt{v}
optimarto optimize{v}
optimismooptimism{m}
optimistaoptimistic{adj}
optimistaoptimist{mf}
optimizarto optimize{v}
optometríaoptometry{f}
opuestocontrary{adj}
opuestoopposed{adj}
opuestoopposite{adj}
opulenciaopulence{f}
oquedadhollow, hollow space, cavity, hole{f}
oquedadinsubstantiality of speech or talk{f}
oírto hear{vi}
oírto hear{vt}
oírto heed; to listen to{vt}
oírto listen{vt}
oraciónclause{f}
oraciónoration{f}
oraciónprayer{f}
oraciónsentence{f}
oradororator{m}
oradorafeminine form of orador{f}
oraloral{adj}
oralidadorality{f}
oralmenteorally{adv}
orangutánorangutan{m}
orarto pray{v}
orateA crazy person{mf} [pejorative]
oratoriaoratory{f}
orbeglobefish{m}
orbemound (part of the regalia){m}
orbeorb{m}
orbeworld{m}
orbicular de los párpadosorbicularis oculi, orbicularis oculi muscle{m}
orbitalorbital{adj}
orbitarTo orbit{v}
orcaorca, killer whale{f}
orcomale orca, killer whale{m}
orcoorc{m}
orcoOrcus{m}
orcohell{m} [poetic]
oráculooracle{m}
ordalíaordeal, trial{n}
ordeñarto milk{v}
ordenorder (command){f}
ordenorder (request, purchase, or food){f}
ordenorder{f} [religion]
ordenorder{m} [biology, classification]
ordengood behavior{m}
ordenorder (highest exponent){m} [mathematics]
ordenorder (arrangement, sequence, organization){m}
ordenorderliness{m}
ordenaciónordination{f}
ordenadaordinate{f}
ordenadoordered{adj}
ordenadorcomputer{m}
ordenanzaordinance{mf} [feminine only]
ordenanzamessenger{mf}
ordenanzaorderly{mf}
ordenarto enjoin{v}
ordenarto order{v}
ordenarto sort{v}
ordeñomilking{m}
ordinalordinal{adj}
ordinariamenteordinarily{adv}
ordinarioordinary{adj}
Ordoñomale given name{prop}
orearto air{v}
OregónOregon{prop}
orejaear{f}
oreja de marabalone (edible univalve mollusc){f}
orejerablinder (for horses){f}
orejeraear armour{f}
orejeraearflap{f}
orejeraearmuff{f}
orejeraearpad{f}
orejeraplug (jewellery for the ear){f}
orejuelaThe earlike handle of a tray, bowl or other such utensil{f}
orellanoremote, separated{adj} [archaic]
oreobreeze{m}
oreofresh air{m}
orfanatoorphanage{m}
orfebregoldsmith{mf}
orfebreríagold work, goldsmithing{f}
orgíaorgy{f}
organelaorganelle{f}
organeloorganelle{m}
organigramaorganization chart{f}
organillostreet organ{m}
organismocorporate body{m}
organismohuman body{m}
organismoorganism, creature{m}
organismoorganization, committee, body{m}
organistaorganist{mf}
organizaciónorganization{f}
organizacionalorganizational{adj}
organizadoorganized{adj}
organizadororganizer{m}
organizarto organize{v}
organizativoorganizational{adj}
oréganooregano, pot marjoram (Origanum vulgare){m}
organocloradoorganochloride{m}
organofosfatoorganophosphate{m}
organografíaorganography{f}
organometálicoorganometallic{adj}
orgasmoorgasm{m}
orgiásticoorgiastic{adj}
orgánicoorganic{adj}
orgánuloorganelle{m}
orgullopride{m}
orgullosamenteproudly{adv}
orgullosoproud{adj}
orientaciónorientation{f}
orientación familiarhome teaching{f}
orientación sexualsexual orientation{f}
orientaleastern{adj}
orientalOriental{adj}
orientarto orient{v}
orienteeast{m}
Oriente MedioMiddle East (region comprising southwest Asia and northeast Africa){prop}
orificioorifice{m}
origenorigin{m}
originaloriginal{adj}
originalmenteoriginally{adv}
originarto originate{v}
originarto give rise to, to cause{vt}
originarto start{vt}
originarionative{adj}
originariooriginal{adj}
orillaedge, border{f}
orillashore or bank of a watercourse{f}
orillarto skirt{v}
orillerolower-class, common, vulgar{adj}
OriónOrion (constellation){prop}
OriónOrion (in mythology){prop}
orinaurine{f}
orinalchamber pot{m}
orinarto urinate{v}
Oriolmale given name{prop}
oriundonative to{adj}
oriundonative{mf}
orlarto add a border to{v}
orlarto trim{v}
orínrust (caused by moisture){m}
orínurine{m} [usually, plural]
ornamentalornamental{adj}
ornamentarto adorn or ornament{v}
ornamentoornament{m}
ornarto adorn{v}
ornitinaornithine{f} [amino acid]
ornitologíaornithology{f}
ornitomancíaalternative spelling of ornitomancia{f}
ornitomanciaornithomancy{f}
ornitorrincoplatypus{m}
orogold{m}
orografíaorography (all senses){f}
orográficoorographic{adj}
oropeltinsel{m}
oropimenteorpiment{m} [mineralogy]
orozuzlicorice{m} [plants]
orquídeaorchid{f}
orquestaorchestra{f}
orquestalorchestral{adj}
orquestarto orchestrate{v}
orquestraorchestra{f}
orquidectomíaorchidectomy{f} [surgery]
OrtegaSpanish surname{prop}
ortógrafafeminine form of ortógrafo{f}
ortógrafoorthographer{m}
ortiganettle (plant){f}
OrtizSpanish surname{prop}
ortosundown{m}
ortoarse, anus{m} [vulgar, Argentina, Uruguay]
ortoanus{m} [vulgar, Chile]
orto-ortho-{prefix}
ortobirrotondaorthobirotunda{f} [geometry]
ortodonciaorthodontics{f}
ortodoncistaorthodontist{mf}
ortodoxiaorthodoxy (all senses){f}
ortodoxoorthodox{adj}
ortodoxoOrthodox{adj}
ortoedrocuboid{m} [geometry]
ortografíaorthography{f}
ortografíaspelling (a person's ability to spell words){f}
ortografíaspelling (specific way of spelling a word){f}
ortográficoorthographic{adj}
ortopédicafeminine form of ortopédico{f}
ortopédicoorthopedic{adj}
ortopédicoorthopedist{m}
ortopediaorthopedics{f} [medicine]
ortopedistaorthopedist{mf}
orugaarugula (plant){f}
orugacaterpillar (insect or vehicle){f}
orureñoOf, from, or in the style of the Bolivian department (region) of Oruro{adj}
orvallodrizzle{m} [Spain]
orzuelostye{m}
osyou, to you, for you; dative and accusative of vos and vosotros{pron}
osadíaaudacity{f}
osadíaboldness{f}
osadodaring, bold{adj}
osamentaskeleton{f}
osarto dare{vi}
osarioossuary{m}
oscilaciónoscillation{f}
oscilarto oscillate{v}
osciloscopiooscilloscope{m}
oscurecerto darken{v}
oscuridaddarkness, obscurity{f}
oscurodark{adj}
o seaI mean; that is to say; used to introduce a new idea or explain a previous one{adv} [informal]
oseznobear cub{m}
osicóninformer, tattler{m}
osito(a lovable man) teddy bear{m}
ositodiminutive form of oso, little bear{m}
osito de pelucheTeddy bear{m}
osmioosmium{m}
osobear{m}
osobear{m} [slang]
-oso-ous, -y{suffix}
oso blancopolar bear{m}
oso de aguaA tardigrade, water bear{m}
oso de anteojosspectacled bear{m}
oso hormigueroanteater{n}
oso hormigueroAn uncircumcised penis, a cheeser{n}
oso KodiakKodiak bear{m}
oso lavadorraccoon{m}
oso malayosun bear{m}
oso negroblack bear{m}
oso pandapanda; panda bear{m}
oso pardobrown bear (Ursus arctos){m}
oso polarpolar bear{m}
oso tibetanoAsian black bear; moon bear{m}
ostensibleostensible, apparent{adj}
ostensiblementeostensibly{adv}
ostentaciónconceit{f}
ostentaciónostentation, boastfulness{f}
ostentarto display or flaunt{v}
ostentosoflashy; showy{adj}
osteocondrosisosteochondrosis{f} [pathology]
osteofitoosteophyte{m}
osteosíntesisosteosynthesis{f} [surgery]
ostiaoyster{f}
ostiónoyster (particularily from genus Crassostrea), specially when prepared or served for food{m} [Mexico]
ostomíaostomy{f} [surgery]
ostraoyster{f}
ostrogodoOstrogothic{adj}
ostrogodoOstrogoth{m}
Oswaldomale given name{prop}
-otafeminine form of -ote{suffix}
OTANNATO{acronym}
-oteemphasizes contempt for subject{suffix}
-oteemphasizes size{suffix}
otearto survey{v}
oteroknoll{m}
otoñalautumnal{adj}
otomíOf or pertaining to the Otomi people and their language{adj}
otomíA member of the Otomi people{mf}
otomíthe Otomi language{prop}
otoñoautumn, fall{m}
otoplastiaotoplasty{f} [surgery]
otorgamientoAct of granting or awarding{m}
otorgarto award{v}
otorgarto grant{v}
otorrinolaringólogafeminine form of otorrinolaringólogo{f}
otorrinolaringólogootorhinolaryngologist{m}
otorrinolaringologíaotorhinolaryngology{f}
otrafeminine of otro; another, another one{pron}
otrasfeminine plural of otro; other{adj}
otra vezagain{adv} [idiomatic]
otredadotherness{f} [philosophy]
otroother, another{adj}
otro"Not again!" or "What, again?" (also Otra vez! or Otra vez?){interj}
ovaciónovation{f}
ovacionarto hail (praise enthusiastically){v}
ovaloval; shaped like an oval{adj}
ovarioovary{m} [anatomy, botany]
ovejasheep{f}
oveja negrablack sheep{f} [idiomatic]
ovejerafeminine form of ovejero{f}
ovejeroshepherd{m}
overoloveralls plural (not US), coveralls plural (US only){m}
ovetenseOviedan{adj}
ovetenseOviedan{mf}
oviedistaA person connecting with Real Oviedo, a Spanish football team from the city of Oviedo{mf} [soccer]
OviedoOviedo{prop}
OviedoThe letter O in the Spanish phonetic alphabet{prop}
ovillarTo roll into a ball{v}
OVNIobjeto volador no identificado; UFO{abbr}
ovoalbúminaovalbumin{f} [protein]
ovoideovoid (egg-shaped){adj}
ovoideovoid{m}
ovíparooviparous{adj}
ovularto ovulate{v}
oxalatooxalate{m} [organic compound]
oxaloacetatooxaloacetate{m} [organic compound]
oxaloacéticooxaloacetic{adj}
oxalocrotonatooxalocrotonate{m} [chemistry]
oxazoloxazole{m} [organic compound]
oxácidooxyacid{m}
oxígenooxygen{m}
oxhídricooxyhydrogen{adj} [chemistry]
oxhidrilohydroxyl{m} [chemistry]
oxidableoxidizable{adj}
oxidaciónoxidation{f}
oxidanteoxidizing{adj} [chemistry]
oxidanteoxidizing agent, oxidant{m} [chemistry]
oxidarto oxidize{v}
oxidasaoxidase{f} [enzyme]
oxidativooxidative{adj}
oxidorreductasaoxidoreductase{f} [enzyme]
oxigenaciónoxygenation{f}
oxigenarto oxygenate{v}
oxigenasaoxygenase{f} [enzyme]
oxihemoglobinaoxyhemoglobin{f}
oximetríaoximetry{f}
oxitocinaoxytocin{f} [hormone]
oxálicooxalic{adj}
oxímoronoxymoron (figure of speech){m}
oxoniooxonium{m} [chemistry]
oyamelsacred fir (Abies religiosa){m}
oye(exclamation) hey{interj}
ozonoozone{m}
ópaloopal{m}
óperaopera{f} [music]
ópticafeminine form of óptico{adj}
ópticasfeminine plural of óptico{adj}
ópticooptical; optic{adj}
ópticos{adj} [masculine plural of, óptico]
óptimooptimal{adj}
óptimosuperlative form of bueno, very good{adj}
óralelet's go, come on, hurry (used to exhort){interj} [Mexico]
óraleoh my God, wow (indicates amazement, astonishment, excitement, surprise, shock, fear){interj} [Mexico]
óraleyes, ok (indicates approbation){interj} [Mexico]
órbitaorbit{f}
órdagoa large bet; an all-or-nothing bet{m}
órganoorgan (all senses){m}
Óscarmale given name{prop}
ósculokiss{m} [formal]
óseoosseous, bony{adj}
ósmosisosmosis{f}
ósmosisosmosis{f} [slang]
óvalooval{m}
óvuloovum, egg{m}
óxidooxide{m}
óxidorust{m}
óxido de calciocalcium oxide{m}