Dictionary Only:
Profanity Off:

20-Letter Words Containing: I,O,S,T,R,O

 (In Any Order)
There are 64 20 letter words, 278 20 letter phrases and 0 20 letter abbr's with I,O,S,T,R,O in.

Best Scoring 20 Letter Words With: I,O,S,T,R,O

Expand?WordSave?LengthUsagePointsType
We couldn't find any valid Scrabble US words with a length of 20. Try changing the version of the game.
Tip: Scrabble EU allows far more words than US!

All 20 Letter Words

Words (64)
hypercholesterolemiaultrarevolutionariesultramicroscopicallytransformationalistsspectrophotometricalspectroheliographiesspectrofluorometriesreconceptualizationspsychopharmacologistpseudocholinesteraseprofessionalizationsphotoreconnaissancesphotophosphorylationphotointerpretationsphotodisintegrationsphosphofructokinasesphiloprogenitivenesspaleoanthropologistsoverprotectivenessesoverdifferentiationsneuropharmacologistsneuroendocrinologistmicropaleontologistsmicroelectrophoresismicroelectrophoreseslymphogranulomatosiskeratoconjunctivitesimmunoprecipitationshypercholesterolemichydrochlorothiazideshomotransplantationsglomerulonephritidesencephalomyocarditiselectrophysiologistselectrophysiologicalelectrophotographieselectrooculographiesdeoxyribonucleotidesdehydrochlorinationscytodifferentiationscountermobilizationscounterdemonstratingcounterconditioningsbacteriochlorophyllsantifluoridationistsanticonservationistsanthropocentricitiesadrenocorticotropinsadrenocorticosteroidsemiautobiographicalpseudohermaphroditicoophorosalpingectomymagnetohydrodynamicslipochondrodystrophykeratoconjunctivitisinternationalisationincontrovertiblenessimmunohistochemistryhyperadrenocorticismheterobasidiomycetescounterrevolutionistcounterdemonstrationcounter-revolutionistcompartmentalisation
Phrases (278)
woodrow wilson guthrievirgil garnett thomsontwo-dimensional figuretumour necrosis factortransportation systemstephen collins fostersouth american countrysolidago multiradiatasoftware optimizationsocial justice warriorsimple harmonic motionsignature recognitionsense of right and wrongselective informationsecond lateran councilsecond coming of christschool superintendentrobert louis stevensonresurrection of christresident commissionerreconstruction periodpsychological featureprumnopitys taxifoliaprofessional relationplasminogen activatorphotographic emulsionpersonality inventorypersonal relationshippass with flying colorsoryctolagus cuniculusorder myxobacterialesorder heterotrichalesorder actinomycetalesorder accipitriformesobstruction of justicenutritionist's caloriejames harold doolittleinstruction executionhomolosine projectionhenri toulouse-lautrecgross national productgenus ornithorhynchusfederation of malaysiaestonian monetary unitemotional disturbancedivision tracheophytademonstrative pronouncross-florida waterwaycortinarius violaceuscontradiction in termsconservation of matterconsecutive operationcomparative anatomistcommunity of interestschristopher isherwoodcase-to-infection ratiocardinal compass pointcapital of south africacapital of sierra leonecapital of rhode islandbusiness organizationbusiness organisationbroadcast programmingbotswana monetary unitbotaurus lentiginosusbaron snow of leicesteraustralian bonytongueatmospheric conditionalessandro cagliostroageratum houstonianumyosemite national parkxeroderma pigmentosumxanthosoma atrovirensworkmen's compensationword processing systemwoolsorter's pneumoniawhite-throated sparrowvigdis finnbogadottiruniversal propositionuniversal product codeungradable oppositiontriostium perfoliatumtrichomanes speciosumtrichomanes reniformetransorbital lobotomytrachinotus carolinustobias george smollettthysanopterous insecttheory of dissociationtheodore francis powysthelonious sphere monktemporal lobe epilepsysynchronous operationsymplocarpus foetidussupport vector machinesubornation of perjurysuborder heterostracisuborder anthropoideasubclass telosporidiastylophorum diphyllumst. gregory of nazianzenspodoptera frugiperdasplit-half correlationspiranthes porrifoliaspartina cynosuroidessouth american sea lionsource of illuminationsomatotrophic hormonesomatic sensory systemsomalian monetary unitsolid-propellant motorsoftware optimisationsodium orthophosphatesocial stratificationsocial anthropologistslip-tongue log skiddersir joseph john thomsonsir harold walter krotosinusoidal projectionsecretary of educationsecond epistle of peterscutigera coleoptratascouting organizationscintillation counterschizopetalon walkeriscabiosa atropurpureasaxifraga stoloniferasalvinia rotundifoliarumohra adiantiformisround-spored gyromitrarocky mountains cherryrevolutions per minuterespiratory infectionrespiratory alkalosisreligious orientationreconstructive memorypyridoxine 5'-phosphatepyramidal motor systempurse-string operationproportional samplingprofit and loss accountprofessional footballprimary solid solutionprice-to-earnings ratiopotassium-argon datingpotassium bicarbonateposterior labial veinspostal rate commissionporonotus triacanthuspolitical correctnesspodocarpus latifoliuspittsburgh of the southphysical anthropologyphilosophy departmentphilip dormer stanhopephaseolus multifloruspersonal line of creditpenstemon linarioidesparietomastoid suturepaper electrophoresisorthophosphorous acidorthopedic foot insoleorthogonal oppositionorder torpediniformesorder of saint benedictorder blastocladialesorder aristolochialesoperation desert stormobject of a prepositionnotropis atherinoidesnorthwest territoriesnonviolent resistanceneoceratodus forsterimumification necrosismortise-and-tenon jointmorphophonemic systemmigratory grasshoppermicrosorium punctatummicropterus salmoidesmacrotus californicusluis de gongora y argotelouis victor de broglielofortyx californicuslipoid granulomatosisligustrum ovalifoliumlecture demonstrationlasthenia chrysostomakinetic theory of gasesketosis-prone diabetesjohn augustus roeblingisovolumetric processisidor feinstein stoneintravenous pyelogramintravenous injectionindustrial revolutionindustrial psychologyhorizontal stabilizerhorizontal stabiliserheterodyne oscillatorhelleborus orientalisheat of transformationhare's-foot bristle ferngross domestic productgraeco-roman wrestlinggooseneck loosestrifegeometric progressiongeoffroea decorticansgenus reithrodontomysgenus ptilonorhynchusgastrophryne olivaceagaleorhinus zyopterusform genus rhizoctiniaforeign correspondentfirst council of nicaeafirst baron rutherfordfile transfer protocolfibrous-rooted begoniafamily ostraciontidaeeuropean house cricketeuproctis phaeorrhoeaeucalyptus citriodoraempiricist philosophyelectronic transistorechinocactus grusoniidryopteris oreopterisdramatic mezzo-sopranodomestic silkworm mothdoctoral dissertationdivision pteridophytadissociative disorderdicrostonyx hudsoniusdichloroethyl sulfidedemetrius poliorcetescriminal conversationcorpuscular radiationcoronary heart diseasecoral-root bittercressconstructive evictionconstruction industryconstantine i of greececonstant accelerationconservation of parityconservation of energyconservation of chargecompensatory spendingcompact disc write-oncecommon snapping turtlecommon carline thistlecolour television tubecolorimetric analysiscodariocalyx motoriusclostridium botulinumclopidogrel bisulfateclandestine operationcitrophilous mealybugcistothorus platensiscistothorus palustrischrysophyllum cainitochrosomal abnormalitychloroxylon swieteniacervical root syndromecertificate of depositcentrolobium robustumcalostoma cinnabarinacalochortus nuttalliicalculus of variationsbittersweet chocolatebinomial distributionbartolommeo eustachiobalaenoptera borealisaversive conditioningastrophyton muricatumarctostaphylos alpinaaposematic colorationapodictic propositionambrosia psilostachyaairborne transmissionaffine transformation
WordDB Icon
WordDB
United Kingdom
Download the WordDB app directly on your home screen for instant access. No App Store necessary, less than 1MB storage, always up-to-date and secure.
1.
Tap on share button
2.
Tap on Add To Home Screenadd button
3.
Find WordDB App Icon on your home screen