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18-Letter Words Containing: O,R,I,S,S,A

 (In Any Order)
There are 100 18 letter words, 367 18 letter phrases and 0 18 letter abbr's with O,R,I,S,S,A in.

Best Scoring 18 Letter Words With: O,R,I,S,S,A

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All 18 Letter Words

Words (100)
gastroenterologisttransubstantiationhyperaldosteronismvaingloriousnessesunprofitablenessesuniformitarianismsultrasophisticatedultraconservativesultraconservatismstriskaidekaphobiastransportabilitiestransistorizationstransilluminationsthermoplasticitiessupranationalitiessupersophisticatedsupercivilizationssuperadministratorsubmicroscopicallysubcategorizationsstructuralizationsstereospecificallystereoregularitiessphygmomanometriesspectroheliographssemiprofessionallysemiconservativelysatisfactorinessessacrilegiousnessesrevascularizationsrehospitalizationsrecrystallizationsrambunctiousnessesradiosensitivitiesquasiperiodicitiespraiseworthinessespostmillenarianismphotodisintegratesphosphodiesterasespertinaciousnessesoverindustrializesoverclassificationorthopsychiatristsnonrepresentativesnondiscriminationsnoncooperationistsnonarbitrarinessesnonanthropologistsneurotransmissionsneuropsychiatristsmultifariousnessesmisrepresentationsmisinterpretationsmisadministrationsmechanochemistriesmaladministrationsmagnetoresistancesirreproachablenessirreconcilablenessinterrelationshipsinharmoniousnessesindustrializationsinconsiderablenessimpersonalizationsimmunosuppressantshypersensitizationhydrometallurgistsgranulocytopoiesisgranulocytopoiesesgastroenterologiesdisintermediationsdishonorablenessesdiastereoisomerismdephosphorylationsdepersonalizationsdeoxyribonucleasesdehydrochlorinasescounterstrategistscounteraggressionscounteraccusationsconversationalistscontradistinctionsconservativenessescongregationalistscongregationalismscommensurabilitiesbiotransformationsbacteriorhodopsinsaustralopithecinesastrophotographiesarchaeoastronomiesanticommercialismsunsatisfactorinesspteridospermopsidapsychotherapeuticscross-fertilizationcross-fertilisationcorrosion-resistantarteriolosclerosisanticholinesterase
Phrases (367)
treaty of versaillestheodosius the greatsuborder anisopterasocial organisationsir martin frobishersir frederick ashtonsir arthur john evanssecurity consultantscottish highlandersamolus parviflorusrheims-douay versionrespiratory illnessprofessional golferprofessional boxingpooecetes gramineuspolianthes tuberosaparkinson's syndromeoscar hammerstein iiorder sarracenialesorder sarcosporidiaorder passeriformeson an irregular basisoil-industry analystnicolaus copernicusnewspaper columnistnational censorshipmusculus temporalismusculospiral nervemorchella crassipesmeconopsis cambricamaterial possessionlepomis macrochirusjons jakob berzeliusirvingia gabonensishypostasis of christhouses of parliamenthealth professionalgustatory sensationgossypium herbaceumgenus recurvirostraexpressed almond oileusebius of caesareaerinaceus europaeuserigeron canadensisdylan marlais thomasdouay-rheims versiondmitri shostakovichdisreputable persondisagreeable persondirect transmissionconstantin brancusiconservation of masscompression bandagecommissaire maigretcollapsible shelterbush administrationbanana passion fruitaugsburg confessionattestation serviceastronomy satelliteassyrian neo-aramaicascension of the lordartocarpus communisanalysis of varianceamaranthus spinosusalytes obstetricansalexander i of russiaair-to-ground missileyellow lady's slipperyellow bristlegrassyellow bristle grasswynnea sparassoideswrit of habeas corpuswoolsorter's diseasewestern ribbon snakewestern mountain ashwandering albatrossvolumetric analysisvespula maculifronsvena supraorbitalisvascular prosthesisvaranus komodoensisvaledictory addressunited states dollarunipolar depressiontyrannus vociferanstussock caterpillartrisodium phosphatetransmission systemtobacco mosaic virusthujopsis dolobratathomas stearns eliotthomas gainsboroughthermoplastic resinthamnophis sirtalisthamnophis sauritusthamnophis proximustextual scholarshipsystema urogenitalesystema digestoriumsystem of numerationsynaptomys borealissymplocus tinctoriasymphoricarpos albaswiss confederationsurvivors insurancesupra expressionismsupervisory programsuborder tarsioideasuborder ceratopsiastructural genomicsstochastic variablestellar associationsteganopus tricolorstations of the crossstarvation acidosisstanford universityspanish oyster plantsonora semiannulatasolanum commersoniisolanum carolinensesir john carew ecclessir ernst boris chainsignal-to-noise ratioshort saphenous veinshort gastric arteryshorea teysmannianasexual relationshipsensory deprivationsecobarbital sodiumscleroderma bovistasaxifraga hypnoidessarcophilus hariisisaratoga spittlebugsarah kemble siddonssample distributionsamolus floribundussaint teresa of avilasailor's breastplaterobert james fischerrhizoctinia diseaseretarded depressionrespiratory diseaserelative atomic massregression equationregression analysisregional anesthesiareal-time processingreactive depressionrachel louise carsonquadriphonic systemquadraphonic systempylodictus olivarispterocarpus indicuspsychotria capensispsoriatic arthritisprunus angustifoliaprumnopitys elegansprosopis juliifloraprosopis glandulosaprofessional tennisprofessional personprofessional dancerprionotus carolinuspresident john adamspotassium hydroxidepotassium carbonatepotamogeton crispuspopulus balsamiferapomatomus saltatrixpolitical commissarplatanus orientalisphyllostachys nigraphragmites communisphaseolus angularispezophaps solitariaperiodontal diseasepeperomia sandersiipedestrian crossingpaul bustill robesonparochetus communisparascalops breweriparallel processingpaprilus alepidotuspancreatic fibrosispalace of versaillesoreamnos americanusorder ustilaginalesorder rickettsialesorder psilophytalesorder aspergillalesoperations researcholfactory sensationobservation stationnucleolus organisernon-christian priestnicholas ii of russianervous prostrationnasogastric feedingnarcissus jonquillamyositis trichinosamyasthenic syndromemusculus pectoralismusculus buccinatormountain watercressmineral associationmilitary commissionmilitary censorshipmaster of ceremoniesmarta brigit nilssonmarble bones diseasemalacosoma disstriamacrozamia spiralislupinus subcarnosuslouis henry sullivanlouis henri sullivanlonicera canadensislivistona australislip synchronisationleycesteria formosaleptopteris superbaleontocebus rosaliale douanier rousseaulathyrus latifoliuslaportea canadensislactarius deliciosokorsakov's psychosiskeratosis nigricansjunction transistorjuan carlos i of spainjosiah willard gibbsjessica lucy mitfordjatropha stimulosusjames francis thorpeislets of langerhansiron-storage diseaseipomoea orizabensisin one's birthday suithysterical neurosishynerpeton bassettihorseshoe whipsnakehesperis matronalisharold hirschsprunghalicoeres radiatusgrindelia squarrosagreen monkey diseasegreat saphenous veingoods and service taxgenus zinjanthropusgenus stephanomeriagenus schizophragmagenus pseudowinteragenus pleurothallisgenus micropogoniasgenus lagerstroemiagenus ichthyosaurusgenus gasterophilusgenus dicranopterisgenus chorizagrotisgenus chirocephalusgenus cardiospermumgenus calamagrostisgenus archidiskidongenus actiniopterisfragaria chiloensisfirst battle of ypresfirst baron tennysonfast of the firstbornfamily rhiptoglossafairness commissioneuonymus americanuseuarctos americanusestrogen antagonistesther hobart morrisepistle to the romansepacris obtusifoliaenglish hippocrateselaeocarpus grandiseichhornia spesiosaecclesiastical robeeastern indigo snakeeastern fox squirreleastern catholicismeast indian rosewooddwarf russian almonddryopteris fragransdryopteris filix-masdouglas fairbanks jr.double-breasted suitdorsal scapular veindorothy leigh sayersdissociation energydiscretionary trustdelusional disorderdaucus carota sativacystopteris montanacystophora cristatacupressus govenianacupressus arizonicacriminal possessioncourt of saint james'scorrosive sublimatecoronavirus diseasecoronary thrombosiscornelius janseniuscoreopsis tinctoriacordyline australiscordia gerascanthusconversion hysteriacontinuing trespassconnarus guianensiscompetitor analysiscommon lady's-slippercolinus virginianuscolaptes chrysoidesclinical depressionclematis versicolorclass holothuroideaclass cyanobacteriaclass coniferopsidachrysobalanus icacochristian schonbeinchoriotis australischinese scholartreechinese scholar treechinese parasol treecharles william postcerebral thrombosiscercis occidentaliscatherine i of russiacastilleja chromosacastanea ozarkensiscarissa grandifloracamelus dromedariuscallorhinus ursinusbubalus mindorensisbronchoscopic smearbroadcasting studioboy scouts of americabouvier des flandresbocconia frutescensbillion-dollar grassbidens trichospermabarometric pressurebarack hussein obamaaustrotaxus spicataastroloma humifusumassociate professorassociate in nursingassistant professorasian tiger mosquitoasian horseshoe crabarticulatory systemarterial blood gasesarnold lucius gesellaristotelia serrataaristarchus of samosarisaema atrorubensanolis carolinensisanoa depressicornisanarchist communismanamnestic responseagitated depressionaegilops triuncalisacoustic resistanceacoustic absorptionabsorption spectrum
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