18-Letter Words Containing: I,T,A,C
(In Any Order)
There are 239 18 letter words,
1,034 18 letter phrases and
0 18 letter abbr's with
I,T,A,C in.
Best Scoring 18 Letter Words With: I,T,A,C
Expand? | Word | Save? | Length | Usage | Points | Type | |
---|---|---|---|---|---|---|---|
We couldn't find any valid Scrabble US words with a length of 18. Try changing the version of the game.
Tip: Scrabble EU allows far more words than US! |
All 18 Letter Words
Words (239)
telecommunicationscharacteristicallyinconsequentialityhypercoagulabilitycompartmentalizingtransmogrificationoversimplificationantivivisectionistpsychopathologicalinterchangeabilitydisenfranchisementpaleoclimatologistunpredictabilitiesungrammaticalitiesuncharitablenessesunattractivenessesunaccountabilitiesultrasophisticatedultramicroscopicalultraconservativesultraconservatismsultracentrifugallytranscendentaliststranscendentalismsthermoplasticitiestheatricalizationstachistoscopicallysupersophisticatedsuperintellectualssupercivilizationssubclassificationssubcategorizationsstructuralizationsstoichiometricallystereospecificallystereophotographicspectroheliographyspectroheliographssomnambulisticallysemidomesticationssemiconservativelysedimentologicallysatisfactorinessesroentgenologicallyrevascularizationsrecrystallizationsrechromatographingrechromatographiesrambunctiousnessesradiochromatogramsquattuordecillionsquasiperiodicitiesquantificationallypsychopathologistspsychoanalyticallyprovincializationspropagandisticallypronounceabilitiespostpsychoanalyticpolyesterificationpolychromatophilicpolychromatophiliapolyacrylonitrilesphysiopathologicalphotosyntheticallyphotoreactivationsphotomicrographiesphotodissociationspertinaciousnessesperpendicularitiespathophysiologicalparticularizationspaleoclimatologiesovolactovegetarianoverspecializationoveroptimisticallyoveridentificationoverconcentrationsovercommunicationsoverclassificationovercentralizationorthopsychiatristsophthalmologicallynondiscriminationsnoncooperationistsnonconfrontationalnoncomparabilitiesnoncommutativitiesnonanthropologicalneuropsychiatristsmulticellularitiesmonochromaticitiesmisidentificationsmisclassificationsmineralocorticoidsmicrophotographiesmicrophotographersmicropaleontologicmicromanipulationsmicroenvironmentalmicroencapsulationmicroencapsulatingmicrocrystallinitymicrocalorimetriesmetallographicallymechanochemistriesmagnetostrictivelymagnetoresistancesmacrophotographieslepidopterologicalirreplaceabilitiesintraventricularlyintercommunicatingintercolumniationsintellectualnessesindiscriminatinglyindiscriminatenessincontestabilitiesinconceivabilitiesincommensurabilityinarticulatenessesinappreciativenessimpracticabilitiesimmunoreactivitiesimmunoprecipitatesimmunoprecipitatedimmunopathologicalimmunocytochemicalhypernationalistichyperconcentrationhydrometallurgicalhomoscedasticitieshistophysiologicalhandcraftsmanshipsgranulocytopoiesisgranulocytopoiesesfractionalizationsexceptionabilitiesethnomusicologicalelectroretinographelectroretinogramselectromyographieselectrodesiccationelectrocorticogramelectrocardiogramsdiscriminabilitiesdisconsolatenessesdiethylcarbamazinedehydrochlorinatesdehydrochlorinateddecriminalizationscounterstrategistscounterretaliationcounterprogrammingcountereducationalcounterculturalismcounteraggressionscounteradvertisingcounteradaptationscounteraccusationsconversationalistscontradistinctionsconsubstantiationsconstitutionalizesconstitutionalizedconstitutionalistsconstitutionalismsconservativenessesconsequentialitiescongregationalistscongregationalismsconceptualizationscompartmentalisingcompanionabilitiescommercializationscommensurabilitiescollectivisticallyclaustrophobicallychromolithographicchromolithographerchromolithographedchlortetracyclinesbureaucratizationsbourgeoisificationbiocompatibilitiesbacteriorhodopsinsautobiographicallyaustralopithecinesarchaeoastronomiesappreciativenessesantidiscriminationanticounterfeitinganticommercialismsaerothermodynamicsaccumulativenessesunsatisfactorinessunenthusiasticallyunconstitutionallyultranationalistictrichlormethiazidespectrographicallyrecruiting-sergeantradiocommunicationpsychotherapeuticspocket-handkerchiefoxidation-reductionovercapitalizationovercapitalisationnonprognosticativenoninterchangeablenitrochloromethanemuscivora-forficatamultifunctionalitylacto-vegetarianisminternationalisticintercommunicationhypercholesteremiahomobasidiomyceteshistocompatibilityfibrocartilaginousenterobacteriaceaeelectrocardiographcytoarchitectonicscylindrical-stemmedcross-fertilizationcross-fertilisationcounterreformationcorynebacteriaceaecorrosion-resistantcolumbite-tantalitechemotherapeuticalcharacteristicnesscaterpillar-trackedcalymmatobacteriumballistocardiogramarteriolosclerosisanticholinesteraseanthropocentricityadenocarcinomatousPhrases (1034)
xerographic printervoiceless consonantvoice communicationvictory in europe dayvictory celebrationvictor frankensteinvertical stabiliserupton beall sinclairtypographical errortuamotu archipelagotriglochin maritimatomistoma schlegelitichodroma muriariatheoretical accountthanksgiving cactustalinum paniculatumtable-tennis racquetsyzygium aromaticumsynthetic substancesubversive activitysubclass metatheriasolid body substancesocial organizationsocial organisationsistrurus catenatussir frederick ashtonsexually attractivesexual reproductionsetophaga ruticillasemilunar cartilageseismic disturbancesecurity consultantscottish highlanderscientific researchscandinavian nationrudbeckia laciniataright-handed pitcherrhetorical languagerepublic of kiribatirefrigerator cookieprivate corporationpresident clevelandpooecetes gramineuspolitically correctpolitical dissidentpoisonous substancepinicola enucleatorpiano transcriptionphysiological statephysical attractionphoenix dactyliferapennisetum setaceumostrya carpinifoliaoscar hammerstein iiorder ichthyosauriaorder eubacterialesoperating procedureoenothera fruticosaoceanites oceanicusoccupational hazardnycticebus pygmaeusnewspaper columnistneapolitan ice creamnautical signal flagnational censorshipnarcotic antagonistmusical compositionmusical arrangementmusculus temporalismolar concentrationmolal concentrationmetric capacity unitmethod of accountingmercator projectionmathematics teachermarijuana cigarettemagnetic attractionlogistic assistancelogistic assessmentlogical implicationlinguistic relationlimenitis archippuslicensing agreementliability insurancelatimeria chalumnaelachrymal secretionkamchatka peninsulajean-frederic joliotjean baptiste racinejames whitcomb rileyisabella i of castileintracellular fluidintervertebral discinternational scaleinterior decorationinterior decoratinginstallation chargeinflectional endingimperfective aspecthypostasis of christhistorical documenthindu calendar monthhealth care providergravitational forcegrammatical subjectgrace patricia kellyglyceryl trinitrategenus recurvirostragenus melopsittacusgenus eschscholtziagenus dimorphothecagenus citharichthysgenus chamaecytisusgenetic abnormalitygarcinia mangostanafunctional disorderfulminating mercuryfulminate of mercuryfricative consonantfourth cranial nervefortunella japonicafavorable receptionfamily trichechidaefamily nepenthaceaefamily motacillidaefamily loranthaceaefamily centriscidaefamily accipitridaefamily acanthuridaeexplication de texteessential conditionessential amino acideriobotrya japonicaemberiza citrinellaelement of a cylinderelectronics companyelectronic databaseeducation secretaryeconomic assistanceduckbilled platypusdmitri shostakovichdivision eubacteriadivision cynodontiadistinctive featuredirectional antennadirect transmissiondipsacus sylvestrisdiplomatic ministerdiplomatic buildingdigitalis glycosidedewey decimal systemdangling participlecytotropic antibodycyanocitta cristatacrotalus mitchelliicrataegus laevigatacrataegus crus-gallicouncil of constancecorporate executiveconstantin brancusiconservation of masscomputer peripheralcomptonia peregrinacommissaire maigretcomminuted fracturecommercial documentcommercial activitycolumbia universitycolocasia esculentacollapsible sheltercognitive semanticsclass schizomycetesclass dicotyledonaechristopher marlowechemical operationschemical attractioncause to be perceivedcastanea mollissimacascade everlastingcarrying into actioncapital of wisconsincapital of venezuelacapital of tennesseecapital of swazilandcapital of nicaraguacapital of new mexicocapital of new jerseycapital of minnesotacapital of louisianacapital of lithuaniacapital of indonesiacapital of guatemalacapital of cape verdecapital of australiacapital of argentinacapital expenditurecalifornia white oakbignonia capreolatabernardo bertolucciattestation serviceascension of the lordartocarpus communisartistic productionartificial additivearthur m. schlesingerarteria pancreaticaarmoracia rusticanaareteria cervicalisarchitectural styleapodemus sylvaticusantispasmodic agentantipsychotic agentantineoplastic drugantilope cervicapraantiberiberi factorantagonistic muscleangle of inclinationandrew dickson whiteancylus fluviatilisanamnestic reactionamphibious aircraftamerican revolutionamerican pulsatillaambystoma mexicanumalytes obstetricansalternating currentalgorithmic programagropyron cristatumaegean civilisationactinidia deliciosaacoustic gramophoneaccounting standardaccordance of rightsacadia national parkacademic departmentyellow pitcher plantwrit of habeas corpuswisteria frutescenswinter olympic gameswind energy facilitywhite-lipped peccarywestern fence lizardwestern diamondbackweather forecastingvolumetric analysisvocational trainingvirgilia divaricatavigilance committeeviaticus settlementviatical settlementveterinary medicinevertical stabilizerverbascum lychnitisverbascum blattariaverbal intelligencevena intercapitalisvena gastrica-dextravascular prosthesisvaledictory speakervaledictory orationvaledictory addressvaccinium stamineumvaccaria pyramidatauterine contractionurogenital medicineunspoken accusationunited arab republicuniocular dichromatunilateral contractultrahigh frequencytyrannus vociferanstypewriter carriagetypesetting machinetype of architecturetussock caterpillartropical rain foresttrinectes maculatustrillium recurvatumtrichostema lanatumtricholoma venenatatricholoma vaccinumtricholoma pardinumtrichloracetic acidtremella reticulatatremella fuciformistransuranic elementtrailing four o'clocktoxemia of pregnancytorreya californicatopographic anatomytopical anaesthetictopical anaesthesiatobacco mosaic virustime deposit accounttiarella cordifoliathoroughbred racingthermoplastic resinthermobia domesticatherapeutic cloningtheory of indicatorstheatrical producertextual scholarshipteucrium scorodoniateucrium chamaedrystetraneuris acaulistectaria macrodontataxodium mucronatumtaraxacum ruderaliatanacetum douglasiitanacetum coccineumtanacetum balsamitatalmudic literaturetall field buttercuptalinum aurantiacumtactual explorationsystema lymphaticumsymplocus tinctoriaswiss confederationsurveillance systemsurgical instrumentsurface-active agentsupratrochlear veinsubthalamic nucleussubsistence farmingsuborder lacertiliasuborder ceratopsiasubclass actinopodastructural genomicsstriated muscle cellstrawberry ice creamstochastic variablestictopelia cuneatasterculia rupestrisstellar associationsteganopus tricolorstations of the crossstarvation acidosisspotsylvania countyspartina pectinmataspace-time continuumsouthern white cedarsouth celestial polesolar magnetic fieldsociological theorysocial anthropologysmoking compartmentsir ernst boris chainsir alfred hitchcocksilphium laciniatumside-blotched lizardshortia galacifoliashort gastric arteryshirley temple blacksex-change operationserratula tinctoriaserratia marcescenssergeant first classsentential functionsemi-sweet chocolatesegmentation cavitysecurity departmentsecondary educationsecondary dentitionsecobarbital sodiumscleroderma bovistasciaenops ocellatussaturated fatty acidsao tome and principesanskritic languagesalvinia auriculatasaint thomas a becketsaint lawrence riversaint francis xaviersacrifice operationsabbatia campestrisrocky-mountain maplerocky mountain sheeprocky mountain pinonrobert james fischerrobert bruce mathiasring-necked pheasantring-necked parakeetright gastric arteryrickettsial diseaserichard john robertsrichard henry tawneyrhizoctinia diseaserhetorical questionreticular formationrepublic of the sudanrepublic of botswanarene-robert cavelierrelative atomic massreductio ad absurdumrecreation facilityrecombinant proteinreal-time processingreactive depressionreaction propulsionratibida columnarisrate of depreciationratchet screwdriverquadriphonic systemquadraphonic systempylodictus olivarispus-forming bacteriapure iambic trimeterpupillary sphincterpublic relations manpublic presentationpterocnemia pennatapterocarpus indicuspsychotria capensispsychological statepsoriatic arthritispsittacus erithacuspsidium cattleianumpseudotaxus chieniiprotozoal infectionpropositional logicprophylactic deviceprobiotic bacteriumprionotus carolinusprince-of-wales'-heathprince of wales heathpretrial conferencepresbyterian churchpractice of medicinepotos caudivolvuluspotato scab bacteriapotassium carbonatepotamogeton crispuspositive chemotaxispopulus trichocarpaponcirus trifoliatapolystichum brauniipolitical scientistpolitical commissarpolice headquarterspoephila castanotispneumogastric nerveplumeria acutifoliaplatycerium andinumplatanus acerifoliaplatalea leucorodiaplains pocket gopherpitcher-plant familypimenta officinalispickeringia montanaphysical distancingphyllostachys nigraphragmites communisphotographic cameraphonological systemphilipp melanchthonpetteria ramentaceapetersburg campaignperuvian mastic treepersonal credit lineperpendicular stylepeltandra virginicapediculosis capitispedestrian crossingpecten magellanicuspaumotu archipelagopartial correlationparochetus communisparanthias furciferparametric quantityparabolic reflectorpancreatic fibrosispaleo-indian cultureorthochromatic filmoriental bush cherryorder stegocephaliaorder rickettsialesorder marchantialesorder actinomyxidiaopisthocomus hoazinoperations researchopen-air marketplaceonopordum acanthiumonopordon acanthiumolfactory sensationnyctanassa violaceanyctaginia capitatanorthern white cedarnorth celestial polenormative economicsnorman architecturenonsocial infectionnon-christian priestnewtonian telescopenewtonian reflectornewtonian mechanicsnegative reinforcernegative chemotaxisnautical linear unitnaturally occurringnational assistancenasogastric feedingnarrowbody aircraftnarrow-body aircraftmyositis trichinosamyelocytic leukemiamycteroperca bonacimyasthenic syndromemutually beneficialmusculus pectoralismusculus buccinatormultiplication signmountain watercressmountain four o'clockmountain chinchillamountain blacksnakemonocytic leukaemiamonoclonal antibodymomordica charantiamolecular biologistminor diatonic scaleminoan civilizationminoan civilisationminiature schnauzermineral associationmilitary commissionmilitary censorshipmilitary capabilitymicroscopic anatomymichael stuart brownmichael gerald tysonmexican pocket mousemexican freetail batmetaplastic anaemiametaphosphoric acidmetabolic alkalosismertensia virginicamelicocca bijugatusmedical institutionmedical examinationmedicago intertextamedial rectus musclematricaria recutitamatricaria inodorummathematical symbolmaster of ceremoniesmarquis de condorcetmarcus junius brutusmanufacturing plantmalice aforethoughtmalheur wire lettucemalacosoma disstriamajor diatonic scalemagnetomotive forcemagneto-optical discmagnetic levitationmagnetic core memorymagnesium carbonatemacroscopic anatomymachine translationlysimachia ciliatumlycopodium clavitumlutjanus blackfordilucretia coffin mottlong-distance runnerlobelia siphiliticalitocranius walleriliquid metal reactorlip synchronizationlip synchronisationlinebacker blitzinglimnocryptes minimaligustrum japonicumlight whipping creamleycesteria formosalexicalized conceptlepiota rubrotinctalepiota clypeolarialepiota cepaestipesleontocebus rosalialegislative councillearner's dictionarylaportea canadensislandscape architectlactose intolerancelactarius deliciosokingdom protoctistakeratosis nigricanskalashnikov culturejunction transistorjudicial separationjoint chiefs of staffjohn griffith chaneyjessica lucy mitfordjerusalem artichokejean francois milletjames francis thorpejames butler hickockitalian renaissanceitalian honeysuckleionization constantintrauterine deviceintracranial cavityinternational pitchinternal combustionintergalactic spaceinterfacial tensionintercapitular veininteragency supportintelligence agencyinorganic phosphateinorganic chemistryinformation scienceinflectional suffixinevitable accidentinductive reasoningindri brevicaudatusindicator electrodeincomplete fractureincomplete abortionin the adjacent houseidiopathic disorderictalurus punctatushysterical neurosishypoplastic anaemiahypoglycaemic agenthypericum maculatumhyperfocal distancehydroxybutyric acidhooded pitcher planthieracium praealtumhexalectris spicataheterotheca villosaherpes encephalitishelicobacter pyloriheat of dissociationheat of condensationhealthcare facilityhealthcare deliveryhealth care deliveryhave the distinctionharry stack sullivanhalicoeres radiatushaemorrhagic strokegyromitra esculentagymnastic apparatusguilt by associationgroup participationgregorian telescopegreenstick fracturegrammatical meaninggraduation exercisegovernment activitygothic architecturegoods and service taxgiant potato creepergeocentric parallaxgenus schizopetalongenus platypoecilusgenus mycobacteriumgenus lactobacillusgenus kenyapithecusgenus ichthyosaurusgenus hyracotheriumgenus hyacinthoidesgenus falcatifoliumgenus dicranopterisgenus chorizagrotisgenus ceratotheriumgenus calamagrostisgenus bruckenthaliagenus anoectochilusgenus agrobacteriumgenus actiniopterisgenus acanthocybiumgeneral anaestheticgaylussacia baccatagavialis gangeticusgastroepiploic veingastrocolic omentumgarcinia gummi-guttafunctional genomicsfunctional calculusfumaria claviculatafull faith and creditfuchsia excorticatafront-porch campaignfritillaria recurvafrancois mitterrandfractional currencyforward transactionflycatching warblerflat tip screwdriverfirst earl of chathamfirst baron macaulayfinancial statementfinancial conditionfictional characterfamily vittariaceaefamily trionychidaefamily trichiuridaefamily tremellaceaefamily tilletiaceaefamily tamaricaceaefamily staphylaceaefamily scutigeridaefamily orchestiidaefamily notoryctidaefamily notonectidaefamily martyniaceaefamily marattiaceaefamily loxomataceaefamily gentianaceaefamily equisetaceaefamily embiotocidaefamily cuterebridaefamily cordaitaceaefamily combretaceaefamily cetorhinidaefamily ceratopsidaefamily celastraceaefamily catostomidaefamily alismataceaeextracellular fluidexothermic reactionexophthalmic goiterexecutive secretaryeuropean white bircheuphorbia corollataeuclid's fourth axiomeucharistic liturgyeucalyptus coriaceaeuarctos americanusequine encephalitisequatoguinean francepicyclic gear trainepacris obtusifoliaenglish hippocratesenergy of activationendowment insuranceelementary particleelectrostatic fieldelectrical engineerelectrical capacityelectric-arc furnaceelectric resistanceelectric receptacleelectric automobileeighth cranial nerveeighter from decaturedward jean steicheneducational programecumenical movementecclesiastical robeecclesiastical modeecballium elateriumeastern fence lizardeastern cricket frogeastern catholicismdynamic electricitydutch case-knife beanduodecimal notationduck-billed platypusdrepanocytic anemiadramatic productiondomesticated animaldoctor of humanitiesdivision myxomycotadivision cyanophytadiversionary attackdistrict of columbiadissociation energydispersed particlesdiscretionary trustdirector of researchdirect bill of ladingdiplomatic immunitydigitaria ischaemumdiffraction gratingdichondra micranthadicentra cucullariadicentra canadensisdicamptodon ensatusdevil's walking stickdescurainia pinnatadescriptive grammardepreciation chargedental practitionerdental orthopaedicsdeductive reasoningde facto segregationdaucus carota sativadaboecia cantabricacytophilic antibodycytisus ramentaceuscystopteris montanacystophora cristatacyrtomium aculeatumcyclopes didactyluscutaneous sensationcustard-apple familycultural revolutioncrystallized gingercryptogramma crispacronartium ribicolacrocodilian reptilecrescent-cell anemiacrataegus apiifoliacourt of saint james'scountervailing dutycounterbattery firecounter reformationcotoneaster dammericorticospinal tractcortaderia selloanacorrosive sublimatecorporal punishmentcoronary thrombosiscoreopsis tinctoriacordyline australiscordia gerascanthuscoptis groenlandicacoordinate geometryconvolution of brocaconversion reactionconversion hysteriacontract of adhesioncontinuing trespasscontinental glaciercontagious abortionconstructive breachconjugal visitationcongenital disorderconfederate soldierconfederate jasmineconduction deafnesscomputer simulationcomputer programingcomplement fixationcompetitor analysiscompatible softwarecompassionate leavecomparative anatomycommunist manifestocommon unicorn plantcommon pitcher plantcommodity brokeragecommittal to writingcommercial travelercombat intelligencecolchicum autumnalecolaptes chrysoidescognitive operationcoelenterate familycodiaeum variegatumclimbing nightshadeclianthus speciosusclematis virginianaclematis versicolorclematis ochreleucacleistes divaricataclear-air turbulenceclaytonia virginicaclaudius ptolemaeusclatonia lanceolataclassical mythologyclass holothuroideaclass hepaticopsidaclass ginkgophytinaclass dicotyledonesclass cyanobacteriacladrastis kentukeacitrus aurantifoliacitellus variegatuscirsium lanceolatumcirculatory failurecirculating librarycirculating decimalcircis siliquastrumchristian scientistchristian schonbeinchoriotis australischinese scholartreechinese scholar treechinese parasol treechinese lacquer treechi-square statisticchelydra serpentinacheiranthus asperuscheilanthes eatoniichattahoochee rivercharles william postchairman of the boardchaenopsis ocellataceylon cinnamon treecerro del nacimientocerebral thrombosiscercis occidentalisceratotherium simumceratostomella ulmicerapteryx graminiscentaurea cinerariacentaurea americanaceltis occidentaliscelestial mechanicscelestial longitudecelestial hierarchycatherine i of russiacatherine de mediciscatalytic convertercastilleja chromosacastanea ozarkensiscassia occidentaliscassia augustifoliacasanova de seingaltcartridge extractorcarolingian dynastycarduelis cucullatacardamine pratensiscaranx bartholomaeicapsicum frutescenscapparis mitchelliicapital of singaporecapital of san marinocapital of costa ricacanalis vertebraliscanaanitic languagecampanula carpaticacalvinistic baptistcalostoma raveneliicallitris calcaratacallinectes sapiduscalifornia white fircalculating machinecalcium bicarbonatecalandrinia ciliatabuchloe dactyloidesbrush-tail porcupinebroadcasting studiobreech presentationboy scouts of americabougainville trenchborn-again christianbook of ecclesiastesbocconia frutescensblue channel catfishblindstitch machineblind stitch machineblattella germanicablackbody radiationblack-body radiationblack-and-tan terrierbidens trichospermabastardy proceedingbassariscus astutusbasal metabolic ratebartolomeo eustachibarometric pressurebarnaba chiaramontiball-and-socket jointbacillary dysenterybachelor of divinityautomobile mechanicaustrotaxus spicataaustralian chestnutauditory perceptionattractive nuisanceatrial septal defectatlantic white cedaratlantic tripletailasterid dicot familyassociative aphasiaassociate professorassociate in nursingasclepias incarnataarytenoid cartilageartium baccalaurensartificial languagearticulatory systemarticle of furniturearteria ophthalmicaarteria mesentericaarteria epigastricaarteria communicansarteria auricularisarmillaria caligataaristolochia durioraristarchus of samosarisaema dracontiumarches national parkapplied mathematicsapplication programappendicular arteryapothecaries' weightapodictic certaintyapical placentationapatetic colorationantonio da correggioanticonvulsant druganticipatory breachantiarrhythmic druganterior facial veinantarctic peninsulaantarctic continentanointing of the sickangelica sylvestrisanarchist communismanamnestic responseanalytical geometryamerican white birchamerican watercressamerican water shrewamerican water ouzelamerican twinfloweramerican labor partyamerican arborvitaealeurites moluccanaagaricus campestrisaffricate consonantaegilops triuncalisaegean civilizationacute kidney failureacute brain disorderactive matrix screenactinidia chinensisacoustic resistanceacoustic projectionacoustic phenomenonacoustic absorptionaconitum lycoctonumacentric chromosomeaccounts receivableacceptance samplingacacia xanthophloeaabsorption spectrum