18-Letter Words Containing: O,R,I,S,T
(In Any Order)
There are 267 18 letter words,
736 18 letter phrases and
0 18 letter abbr's with
O,R,I,S,T in.
Best Scoring 18 Letter Words With: O,R,I,S,T
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All 18 Letter Words
Words (267)
disproportionatelygastroenterologisttransubstantiationinterconnectednesstransmogrificationoversimplificationspectrophotometricoverrepresentationhyperaldosteronismverisimilitudinousunprofitablenessesuniformitarianismsultrasophisticatedultramicroscopicalultraconservativesultraconservatismstriskaidekaphobiastrichloroethylenestriboluminescencestriboelectricitiestransportabilitiestransistorizationstransilluminationstransformationallythrombophlebitidesthermoplasticitiesthermoluminescencetheatricalizationssupranationalitiessupersophisticatedsuperminicomputerssupercivilizationssuperadministratorsubcategorizationsstructuralizationsstoichiometricallystereospecificallystereoregularitiesstereophotographicsphygmomanometriesspectrohelioscopesspectroheliographyspectroheliographsspectrofluorimetershortsightednessessemiconservativelysatisfactorinessesribonucleoproteinsrevascularizationsrepresentationallyrenationalizationsreinstitutionalizerehospitalizationsredistributionistsrecrystallizationsreconstructionistsreconstructionismsrechromatographiesrambunctiousnessesradiosensitivitiesradiochromatogramsquattuordecillionsquasiperiodicitiespseudotuberculosisprovincializationspropagandisticallypronounceabilitiespraiseworthinessespostmillenarianismpolyesterificationpolyacrylonitrilespiezoelectricitiesphotoreproductionsphotoreactivationsphotomorphogenesisphotomicrographiesphotolithographiesphotodisintegratesphotodisintegratedphosphodiesterasespertinaciousnessesparticularizationsoverspecializationoverprotectivenessoveroptimisticallyoverindustrializesoverindustrializedoverindebtednessesoverfertilizationsoverextrapolationsoverembellishmentsoverconcentrationsovercommunicationsoverclassificationotherworldlinessesorthopsychiatristsorthogonalizationsnonrevolutionariesnonrepresentativesnoninterventionistnonfraternizationsnondiscriminationsnondestructivenessnoncooperationistsnoncomparabilitiesnonarbitrarinessesnonanthropologistsneurotransmissionsneuropsychologistsneuropsychiatristsneurophysiologistsmultifariousnessesmonochromaticitiesmisrepresentationsmisinterpretationsmisadministrationsmineralocorticoidsmicroreproductionsmicrophotographiesmicrophotographersmicrometeorologistmicrometeorologiesmicromanipulationsmicrolepidopterousmicroencapsulationmicroencapsulatingmicrodensitometricmicrodensitometersmicrocrystallinitymicrocalorimetriesmethylprednisolonemeretriciousnessesmelodramatizationsmechanochemistriesmaladministrationsmagnetostrictivelymagnetoresistancesmacrophotographieslumpenproletariatslepidopterologistsirresponsibilitiesintrospectionisticinterrelationshipsinteroperabilitiesinternationalitiesinternationalisinginterinstitutionalintercolumniationsindustrializationsincorruptibilitiesinconvertibilitiesincommensurabilityimpersonalizationsimmunosuppressantsimmunoreactivitiesimmunoprecipitateshypersensitizationhyperrationalitieshyperpolarizationshyperpigmentationshypernationalistichyperimmunizationshyperalimentationshydroxytryptamineshydrometeorologisthydrometeorologieshydrometallurgistshydroelectricitiesgranulocytopoiesisgranulocytopoiesesglottochronologiesgastroenterologiesfractionalizationsferroelectricitiesexterritorialitiesevapotranspirationelectroretinogramselectrophysiologicelectrophilicitieselectromyographieselectroluminescentelectrodesiccationelectrodepositionselectrochemistrieselectrocardiogramsdisproportionationdisproportionatingdisintermediationsdiscourteousnessesdihydroergotaminesdiastereoisomerismdextroamphetaminesdephosphorylationsdepersonalizationsdendrochronologistdematerializationsdehydrochlorinatesdedifferentiationsdecriminalizationsdeconstructionistscreditworthinessescountersuggestionscounterstrategistscounterrevolutionscounterquestioningcounterinstitutioncounterculturalismcounterconventionscounteraggressionscounteradvertisingcounteradaptationscounteraccusationsconversationalistscontradistinctionsconstructivenessesconservativenessescongregationalistscongregationalismscompartmentalisingcommercializationscommensurabilitiesclaustrophobicallychlortetracyclinesbureaucratizationsbourgeoisificationbloodthirstinessesbiotransformationsbiodegradabilitiesbacteriorhodopsinsaustralopithecinesastrophotographiesarchaeoastronomiesantidiscriminationanticommercialismsantiadministrationanagrammatizationsaerothermodynamicsunsatisfactorinessultranationalistictriphosphopyridineterritorialisationspectrographicallyrhinolaryngologistpteridospermopsidapteridospermaphytapsychotherapeuticsovercapitalisationnonprognosticativemuscivora-forficatalaryngopharyngitislacto-vegetarianisminternationalistichypoparathyroidismhypercholesteremiaglomerulonephritisfibrocartilaginousdiethylstilbestrolcytoarchitectonicscross-fertilizationcross-fertilisationcorrosion-resistantballistocardiogramarteriolosclerosisantiferromagnetismanticholinesteraseanti-traditionalismadenocarcinomatousPhrases (736)
woodwind instrumentwisteria floribundavictor frankensteinupton beall sinclairtreaty of versaillestranslating programto the highest degreethomas wright wallerthird epistle of johnthird epistel of johntheodosius the greattelevision reportertelevision receiversyzygium aromaticumsyrian monetary unitsupervisory routinesuperiority complexsuborder anisopterasocial organizationsocial organisationsir mortimer wheelersir martin frobishersir frederick ashtonsir christopher wrensir arthur john evansshort-term liabilityshort hundredweightsexual reproductionsetophaga ruticillasecurity consultantscottish highlanderscorpio the scorpionreturn on investmentrespiratory illnesspriority processingpresident jeffersonposterior pituitarypositive reinforcerportuguese republicpopulus tremuloidespooecetes gramineuspolish monetary unitpolianthes tuberosapiano transcriptionphysical attractionp-type semiconductorostrya carpinifoliaoscar hammerstein iiorthotomus sutoriusorder trogoniformesorder sauropterygiaorder ichthyosauriaorder eubacterialesoil-industry analystoenothera fruticosanewspaper columnistneuropterous insectnational censorshipnarcotic antagonistmusculus temporalisminor tranquilliserminister of religionmethotrexate sodiummaterial possessionmaster of literaturemanganese tetroxidelouis-hector berliozlinguistic relationlighthorse harry leelachrymal secretionkeyboard instrumentjames whitcomb rileyinternational scaleinstallation chargehypostasis of christhypertonic solutionhouses of parliamenthistorical documentherpestes ichneumonheat of vaporisationhealth professionalgustatory sensationgreen mountain stategovernment ministergiambattista marinogeorge westinghousegenus struthiomimusgenus recurvirostragenus dimorphothecagarcinia mangostanafunctional disorderfricative consonantfirst epistle of johnfederation of tribesendorsement in blankelectronics companyelectronic databaseelectron microscopeeducation secretarydylan marlais thomasdmitri shostakovichdivision eubacteriadistributor housingdisreputable persondirect transmissiondiplomatic ministerdanish monetary unitdame sybil thorndikecyanocitta cristatacrotalus mitchelliiconstruction workerconstantin brancusiconservation of masscommissaire maigretcolumbia universitycollapsible shelterchristopher marlowechemical operationscause to be perceivedcapital of new jerseycapital of australiabush administrationbook of instructionsblue ridge mountainsblood extravasationbanana passion fruitauthoritarian stateattestation serviceastronomy satelliteascension of the lordartocarpus communisartistic productionartemisia filifoliaarmoracia rusticanaantineoplastic druganisette de bordeauxandrew dickson whiteanamnestic reactionamphibious aircraftamaranthus spinosusalytes obstetricansalbert szent-gyorgyiair-to-ground missileagropyron cristatumadministrative bodyacoustic gramophoneaccounting standardaccordance of rightszero-coupon securityyellow bristlegrassyellow bristle grasswrit of habeas corpuswoolsorter's diseasewinter olympic gameswhorled loosestrifewhite slime mushroomwhite fringed orchiswestern roman empirewestern ribbon snakewestern mountain ashwestern diamondbackweather forecastingwandering albatrossvolumetric analysisvinegar joe stilwellvespertilio murinusvena supraorbitalisvascular prosthesisvaledictory speakervaledictory addressupholstery materialuniversity of sussexuniversity of oxfordunited states dollarumbelliferous planttyrannus vociferanstussock caterpillartuberculoid leprosytrusteeship counciltropical rain foresttrogium pulsatoriumtrisodium phosphatetrichostema lanatumtremella fuciformistransmission systemtransitive verb formtransfiguration daytransfer of trainingtragelaphus buxtonitoxic shock syndrometop fermenting yeasttobacco mosaic virusthujopsis dolobratathreshold operationthomas stearns eliotthomas gainsboroughthirst for knowledgethird battle of ypresthermosetting resinthermoplastic resinthermobia domesticathermionic emissiontheory of indicatorstheodor seuss geiselthe great starvationthamnophis sirtalisthamnophis sauritusthamnophis proximusthalamostriate veintextual scholarshipteucrium scorodoniaterritorial reservetaraktogenos kurziitaraktagenos kurziisystema urogenitalesystema digestoriumsystem of numerationsynaptomys borealissymplocus tinctoriaswiss confederationsweet-potato ring rotsurjective functionsupratrochlear veinsuperannuation fundsuborder tarsioideasuborder ruminantiasuborder odontocetisuborder lipotyphlasuborder lacertiliasuborder ceratopsiastructural genomicsstriped button quailstress incontinencestreptopelia turturstraight-line methodstorage-battery gridstochastic variablestereoscopic visionstereophonic systemstellar associationsteganopus tricolorstations of the crossstarvation acidosisstanford universityst. christopher-nevissporobolus poiretiispirit of turpentinespanish oyster plantsouthern yellow pinesouthern white cedarsouthern maidenhairsouthern hemispheresouthern bog lemmingsonora semiannulatasolar magnetic fieldsodium hypochloritesociological theorysocial anthropologysmoking compartmentsmilax rotundifoliaslip friction clutchsir george trevelyansir ernst boris chainsir alfred hitchcocksilver quandong treesignal-to-noise ratioside-blotched lizardshortia galacifoliashort saphenous veinshort gastric arteryshorea teysmannianasexual relationshipsex-change operationserratula tinctoriasensory deprivationsensorimotor regionseminiferous tubulesemiconductor diodesecondary educationsecondary dentitionsecobarbital sodiumscleroderma bovistasaratoga spittlebugsao tome and principesample distributionsaint teresa of avilasailor's breastplatesacrifice operationround-tailed muskratrocky mountain sheeprobotic telesurgeryrobert james fischerrobert bruce mathiasrichard john robertsrhus toxicodenedronrhodanthe manglesiirhizopus stoloniferrhizomatous begoniarhizoctinia diseaserhetorical questionrevaluation reserveretarded depressionrespiratory diseaserepulsorlift enginerepublic of the sudanrepublic of botswanareproductive systemreligious mysticismrelative atomic massrelational databaseregression equationregistration numberregional anesthesiareductio ad absurdumred river of the southreal-time processingreactive depressionreaction propulsionratibida columnarisquadriphonic systemquadraphonic systempyrrhuloxia sinuatapylodictus olivarispus-forming bacteriapublic relations manpublic presentationpterocarpus indicuspsychotria capensispsoriatic arthritispsocopterous insectprunus angustifoliaprumnopitys elegansprospero lambertiniprosecuting officerpropositional logicproportional samplepromotional expenseprofessional tennisprionotus carolinusprince-of-wales'-heathprince of wales heathpresident rooseveltpresident john adamspresent progressiveprehistoric cultureprairie golden asterpower-station workerpotentilla anserinapotato scab bacteriapotassium hydroxidepotassium carbonatepotamogeton crispusportal hypertensionpopulus trichocarpaponcirus trifoliatapomatomus saltatrixpolystichum brauniipolitical commissarpolice headquarterspneumogastric nerveplatanus orientalisplatanus acerifoliaplains pocket gopherpinnotheres ostreumpine-barren sandwortphyllostachys nigraphragmites communispezophaps solitariapetroleum geologistpersonal credit lineperiodontal diseasepenstemon rydbergiipenstemon newberryipedestrian crossingpaul bustill robesonparochetus communisparathion poisoningpaprilus alepidotuspancreatic fibrosispalestine authorityoxytropis lambertiiorthopterous insectornithopod dinosauroriental bush cherryorder ustilaginalesorder temnospondyliorder synentognathiorder stegocephaliaorder solenichthyesorder rickettsialesorder psilophytalesorder polymastiginaorder plantaginalesorder marchantialesorder bennettitalesoperations researchoperating statementolfactory sensationobservation stationnorthern hemispherenorth celestial polenormative economicsnormal distributionnonvolatile storagenon-volatile storagenon-christian priestneurotic depressionnervous prostrationnasogastric feedingn-type semiconductormyosotis scorpiodesmyositis trichinosamyasthenic syndromemusculus teres minormusculus pectoralismusculus buccinatormultiple regressionmountain watercressmountain spleenwortmountain fetterbushmother-in-law's tonguemontia lamprospermamolecular biologistminor diatonic scalemineral associationminato ohashi bridgemilitary commissionmilitary censorshipmicroscopic anatomymichael stuart brownmichael gerald tysonmetaphosphoric acidmerovingian dynastymaster of ceremoniesmarta brigit nilssonmarquis de condorcetmalacosoma disstriamajor tranquillisermajor diatonic scalemagnesium carbonatemacroscopic anatomymachine translationlutjanus blackfordilouis the quarrellerlong-term investmentlong-distance runnerlivistona australislitocranius wallerilip synchronizationlip synchronisationlimnocryptes minimaligustrum japonicumleycesteria formosaleptopteris superbaleontocebus rosalialearner's dictionaryleaning tower of pisalathyrus latifoliuslate-spring-bloominglaportea canadensislactose intolerancelactarius deliciosokurdistan labor parykingdom protoctistakeratosis nigricanskammon strait bridgekalashnikov culturejunction transistorjudicial separationjudgment in personamjohn ernst steinbeckjessica lucy mitfordjerusalem artichokejean francois milletjatropha stimulosusjames francis thorpejames butler hickockisopyrum biternatumislets of langerhansiron-storage diseaseintravenous feedinginternal combustionintermediate shroudinterfacial tensioninteragency supportinsider informationinorganic phosphateinorganic chemistryinformation scienceinformation measureinflationary spiralinductive reasoningindirect expressionin your birthday suitin one's birthday suitidiopathic disorderhysterical neurosishypsiglena torquatahyperfocal distancehynerpeton bassettihydropower industryholocentrus bullisiheterotheca villosahesperis matronalishelleborus foetidushalicoeres radiatushaemorrhagic strokehaematobia irritansgyromitra esculentagregorian telescopegreenhouse whiteflygreat saphenous veingraduation exercisegradable oppositiongovernment securitygoods and service taxglorious revolutiongilles de la tourettegeothermal industrygeostationary orbitgenus zinjanthropusgenus trichoglossusgenus trichodesmiumgenus toxicodendrongenus strobilomycesgenus stephanomeriagenus rhinonicterisgenus pseudowinteragenus pleurothallisgenus mycobacteriumgenus lagerstroemiagenus ichthyosaurusgenus hyracotheriumgenus gomphotheriumgenus gasterophilusgenus dicranopterisgenus clethrionomysgenus chorizagrotisgenus chilomycterusgenus cercopithecusgenus ceratotheriumgenus centropristisgenus calamagrostisgenus agrobacteriumgenus actiniopterisgenital personalitygastroepiploic veingastrocolic omentumfuchsia excorticatafrontier settlementfringed loosestrifefranklin d. rooseveltfrancois mitterrandforward transactionfluorescent fixtureflorida smoothhoundfirst earl of chathamfirst battle of ypresfirst baron tennysonfirst baron macaulayfavourable positionfast of the firstbornfamily stromateidaefamily rhiptoglossafamily relationshipfamily orchestiidaefamily ceratopsidaeeuclid's fourth axiomeucalyptus coriaceaeuarctos americanusestrogen antagonistesther hobart morriseptesicus serotinusepistle to the romansepacris obtusifoliaenglish hippocratesendowment insuranceelectrostatic fieldelectron microscopyelectric toothbrushecclesiastical robeeastern roman empireeastern indigo snakeeastern fox squirreleastern cricket frogeastern catholicismeast indian rosewooddryopteris goldianadryopteris fragransdryopteris filix-masdryopteris dilatatadouble-breasted suitdorothy leigh sayersdoctor of philosophydoctor of humanitiesdivision rhodophytadivine right of kingsdiversionary attackdistrict of columbiadissociation energydiscretionary trustdirector of researchdesmodium tortuosumdental orthopaedicsdeflationary spiraldeep supporting firedeductive reasoningde facto segregationdaucus carota sativacytisus multifloruscystopteris montanacystophora cristatacryptotermes breviscryptogramma crispacross-country skiingcross-country ridingcrisis interventioncrataegus apiifoliacourt of saint james'scotoneaster dammericorticospinal tractcortaderia selloanacorrosive sublimatecorporal punishmentcoronary thrombosiscoreopsis tinctoriacordyline australiscordia gerascanthuscoptis groenlandicaconversion reactionconversion hysteriacontract of adhesioncontopus sordiduluscontinuing trespasscontagious abortionconstructive breachcongenital disorderconflict of interestconfederate soldierconfederate jasminecomputer simulationcomplex prepositioncompetitor analysiscompatible softwarecoluber constrictorcollective securitycolaptes chrysoidesclematis versicolorclematis ochreleucaclass holothuroideaclass cyanobacteriacitrus aurantifoliacitroncirus webbericirsium lanceolatumchrysolophus pictuschristian schonbeinchoriotis australischolesterosis cutischinese scholartreechinese scholar treechinese parasol treechinese forget-me-notcharles william postcerebral thrombosiscercis occidentalisceratotherium simumceratostomella ulmicecil scott forestercatherine i of russiacastilleja chromosacastanea ozarkensiscarolingian dynastycapital of singaporecapital of san marinocapital of costa ricacalostoma raveneliibrush-tail porcupinebroadcasting studiobritish labour partybrevoortia tyrannisbreech presentationboy scouts of americaborn-again christianbocconia frutescensblissus leucopterusbird-footed dinosaurbinge-vomit syndromebidens trichospermabernese mountain dogbattle of austerlitzbastardy proceedingbasal metabolic ratebartolomeo eustachibarometric pressureautomobile industryautoimmune disorderaustrotaxus spicataastroloma humifusumasterid dicot familyassociate professorassociate in nursingassistant professorasian tiger mosquitoarticulatory systemarterial blood gasesarteria ethmoidalisarteria communicansartemisia abrotanumarmy of the righteousaristotelia serrataaristolochia durioraristarchus of samosarisaema dracontiumarisaema atrorubensarches national parkapothecaries' weightanticonvulsant druganterograde amnesiaangoumois grain mothanarchist communismanamnestic responsealveolar resorptionalsophila pometariaaleurites moluccanaalan mathison turingagitated depressionaffricate consonantaegilops triuncalisadmiralty mountainsacute brain disorderacoustic resistanceacoustic projectionacoustic absorptionacentric chromosomeaccounts receivableabsorption spectrum
