19-Letter Words Containing: N,O,S
(In Any Order)
There are 216 19 letter words,
975 19 letter phrases and
0 19 letter abbr's with
N,O,S in.
Best Scoring 19 Letter Words With: N,O,S
Expand? | Word | Save? | Length | Usage | Points | Type | |
---|---|---|---|---|---|---|---|
We couldn't find any valid Scrabble US words with a length of 19. Try changing the version of the game.
Tip: Scrabble EU allows far more words than US! |
All 19 Letter Words
Words (216)
sternocleidomastoidcountertransferenceelectroluminescencestraightforwardnessunpretentiousnessesunidimensionalitiesunfashionablenessesunexceptionablenessunderrepresentationundemonstrativenessunconventionalitiesuncontrollabilitiesunconscionabilitiesuncompetitivenessesunceremoniousnessesunapproachabilitiesultrasegregationistultracontemporariestridimensionalitiestransubstantiationstransmogrificationstransformationalistthermoluminescencesterritorializationssuperspecializationsuperconductivitiessuperadministratorssplendiferousnessessentimentalizationssemiconsciousnessessanctimoniousnessesrevolutionarinessesrepresentationalistrepresentationalismreinstitutionalizesreinstitutionalizedreindustrializationradioallergosorbentproletarianizationsposttranscriptionalpostmillenarianismspolyribonucleotidespolyesterificationsphytohemagglutininsphotosensitizationsphotoreconnaissancephotodisintegrationphotodisintegratingphotodecompositionsphotoconductivitiesphosphomonoesterasephosphofructokinasephosphoenolpyruvatephosphatidylcholinephonocardiographiesphenomenalisticallyperspicaciousnessespaleoanthropologistpaleoanthropologiesovoviviparousnessesovolactovegetariansoverspecializationsoversimplificationsoversensitivenessesoverrepresentationsoverinterpretationsoverindustrializingoveridentificationsovergeneralizationsoverclassificationsovercentralizationsovercapitalizationsoverambitiousnessesobjectionablenessesnonrelativisticallynonproductivenessesnoninterventionistsnonenforceabilitiesneuropharmacologistneuropharmacologiesneurofibromatosisesmultitudinousnessesmischaracterizationmiscellaneousnessesmicropaleontologistmicropaleontologiesmicroencapsulationsmicrodensitometriesmethylprednisolonesmethylcholanthrenesknowledgeablenessesirresponsiblenessesirrecoverablenessesirreconcilabilitiesintrospectivenessesinterstratificationinterjurisdictionalintercommunicationsinstantaneousnessesinefficaciousnessesinconspicuousnessesinconsideratenessesinconceivablenessesincommunicabilitiesinappropriatenessesimpressionisticallyimpressionabilitiesimmunohistochemicalimmunohematologistsimmunofluorescencesimmunocytochemistryhypersensitizationshyperemotionalitieshyperconcentrationshomotransplantationheterogeneousnessesgastroenterologistsgastroenterologicalextraordinarinessesexpressionisticallyexhibitionisticallyevapotranspirationsethnomethodologistsencephalomyelitideselectroretinographselectronegativitieselectrodynamometerselectrodesiccationsdisproportionationsdispassionatenessesdisadvantageousnessdirectionlessnessesdimethylnitrosaminedendrochronologistsdemonstrativenessesdeinstitutionalizesdeinstitutionalizeddeindustrializationcytopathogenicitiescrosslinguisticallycountersurveillancecounterretaliationscounterreformationscounterprogrammingscounterinsurgenciescounterinstitutionscounterdemonstratescounterdemonstratedcounterculturalismscounterconspiraciescounteradvertisingscontradistinguishescontradistinguishedcontradistinctivelycontradictorinessescontemplativenessesconstitutionalizingconstitutionalitiesconsequentialnessesconscientiousnessesconceptualisticallycomprehensivenessescomprehensibilitiescomplementarinessescompassionatenessescompanionablenessescommunicativenesseschlorofluorocarbonsbourgeoisificationsauthoritativenessesantivivisectionistsantirevolutionariesantifluoridationistantiferromagnetismsantidesertificationanticonservationistanticholinesterasesangiocardiographiesagammaglobulinemiasadventuresomenessesaccommodativenessesxenotransplantationunselfconsciousnessunproblematicalnessunconstitutionalityunconscientiousnessuncommunicativenessthree-dimensionalitythird-dimensionalitysociolinguisticallysmall-capitalizationsmall-capitalisationresorcinolphthaleinpseudohallucinationprofessionalizationprofessionalisationphacoemulsificationnonrepresentationalmultidimensionalitymeningoencephalitismedroxyprogesteronelarge-capitalisationlanguedoc-roussillonintellectualisationincomprehensibilityhysterosalpingogramhypoadrenocorticismgood-neighbourlinessencephalomeningitisdihydrostreptomycincross-linguisticallycross-classificationcounterdemonstratorconventionalisationcontemporaneousnessanarcho-collectivismPhrases (975)
zairese monetary unitvenae conjunctivalesvector decompositionvalentina tereshkovavaccinium corymbosumunix operating systemuniversity of chicagouniverse of discourseunited nations agencyunion representativetrichopterous insecttransmission channeltransferred propertytrachinotus falcatustemperate rain foresttelevision equipmenttelevision announcersymphytum officinalesydney harbour bridgeswedish monetary unitsurvivorship annuitysurveyor's instrumentsupporting structuresuperior conjunctionsubscription warrantsubfamily potoroinaestizostedion vitreumspoken communicationspecific performancespanish monetary unitsouth american nationsouth american indiansomatotropic hormonesolitary confinementsir noel pierce cowardsierra madre orientalshakespearean sonnetsexadecimal notationseventeen-year locustserbian monetary unitsenior vice presidentsemi-circular bastionself-report inventoryself-adapting programsecondary censorshipscleropages jardiniiscientific socialismscandinavian countrysaprophytic organismsantiago ramon y cajalsalicylate poisoningsaintpaulia ionanthasaint john the apostlerussian monetary unitrobert wilhelm bunsenrestriction nucleasereinforcing stimulusrecursive definitionrabbi moses ben maimonquercus vaccinifoliaprogram optimisationprocrustean standardproboscidea arenariapounds per square inchpositive correlationpoint of intersectionpilosella aurantiacapierre-auguste renoirphysical restorationphysical compositionpetroselinum crispumperiarteritis nodosapelecaniform seabirdpassionflower familypassiflora incarnataorganization expenseoperational casualtyoperational analysisoliver wendell holmesoccupational diseasenorman mattoon thomasneurological diseasemusical organizationmusical organisationmuscular contractionmonotropa hypopithysmicrotus richardsonimatrix transpositionmarmota flaviventrismanagement personnelmaltese monetary unitmalpighian corpusclemalacosoma americanamagnolia soulangianaloss of consciousnessliterary compositionliquid body substancelesotho monetary unitlepidopterous insectleon battista albertilagerstroemia indicajudgment on the meritsjudgment of dismissaljohn millington syngejohn herschel glenn jr.john edward masefieldjean-jacques rousseaujapanese honeysucklejames fenimore cooperjames cleveland owensirrational hostilityinter-service supportinspection and repairinexperienced personincreasing monotonicin spite of appearancehyssopus officinalishylocichla mustelinahuman papilloma virushousing commissionerhoof-and-mouth diseasehindoostani languagehimantopus mexicanushelianthus tuberosusharmonic progressionhandle with kid glovesgossypium peruvianumgo through the motionsgiles lytton stracheygerard manley hopkinsgeorge hubert wilkinsgenus symphoricarposgenus sequoiadendrongenus cryptobranchusgenus branchiobdellagenus arctostaphylosfuel consumption ratefrench polish shellacfirst vatican councilfirst council of lyonsfinnish monetary unitfilippo brunelleschifamily cynoglossidaefagopyrum esculentumexternal respirationeudromias morinelluseskimo-aleut languageerinaceus europeaeuserectile dysfunctiondreissena polymorphadramatic compositiondolichotis patagonumdivision schizophytadiversionary landingdistribution channeldioscorea paniculatadibranchiate molluskdiagnostic proceduredepartment of englishdelusions of grandeurdecreasing monotonicdeclaratory sentencedasypus novemcinctusdame jean iris murdochcumberland mountainscrataegus oxyacanthacourse of instructioncost-of-living benefitcost-benefit analysiscoryphaena equisetiscornelius vanderbiltcongressional recordconditioned stimulusconchoid of nicomedescompensatory damagescommunication systemcommissioned officerclaude elwood shannonclass chondrichthyeschromosomal mutationchrist's resurrectionchinese monetary unitchimonanthus praecoxcharles munroe schulzcharles farrar brownecenchrus tribuloidescease and desist ordercarthamus tinctoriuscarpinus carolinianacarpathian mountainscarboniferous periodcapital of washingtoncapital of tajikistancapital of kyrgyzstancapital of kazakhstancapital of bangladeshcantabrian mountainscanavalia ensiformiscalycanthus floridusbuilding supply housebronislaw malinowskibroadcast journalistbritish monetary unitbattle of the granicusbattle of saint-mihielbattle of marston moorbaroness karen blixenautotrophic organismaustralian aborigineassociation footballasexual reproductionarticles of agreementarchosaurian reptilearabidopsis thalianaaptenodytes forsteriantipodal oppositionanti-takeover defenseanaximenes of miletusamplitude distortionalosa pseudoharengusalopecurus pratensisallium schoenoprasumalfred edward housmanaldous leonard huxleyadvertising divisionadlai ewing stevensonadirondack mountainsabutilon theophrastiabsence without leavezygocactus truncatuszinc phosphate cementwomen's liberationistwilliam sydney porterwilliam harrison hayswild sweet potato vinewholesale price indexwhite-crowned sparrowwhite silk-cotton treewestern pasqueflowerwestern concert flutewestern civilizationwestern balsam poplarwest indian snowberrywest indian satinwoodwater-soluble vitaminwashington's birthdayvisual hallucinationvisual communicationviscount northcliffevexatious litigationvery important personveronica officinalisverbascum phoeniceumventriloquist's dummyvena musculophrenicavena gastroomentalisvanguards of conquestvalerianella locustaurogenital apparatusunsaturated compounduniversity of vermontuniversity extensionunited states capitolunfavorable positionunavoidable casualtyunauthorized absenceulysses simpson grantturnip-rooted parsleyturkish monetary unittumor suppressor genetumor necrosis factortrophoblastic cancertricholoma sejunctumtreasury obligationstransvaal kafferboomtransmission densitytransit declinometertransfusion reactiontragopogon pratensistoowomba canary grasstomasso parentucellitineola bisselliellatimothy francis learytillandsia usneoidesthyrsopteris elegansthyme-leaved sandwortthreadleaf groundselthought transferencethomas woodrow wilsontheatre of operationstheater of operationstestimonial immunityterritorial divisiontephrosia virginianatacoma narrows bridgesystemic circulationsystem of measurementsystem administratorsynesthetic metaphorsymplocus paniculataswamp fly honeysucklesusan b anthony dollarsurgical suction pumpsurface assimilationsupraglacial morainesupply-side economicssuperstitious notionsuperior thyroid veinsun protection factorsuborder ornithopodasuborder nothosauriasuborder maniraptorasuborder gorgoniaceasuborder blennioideasubfamily pythoninaesubfamily cetoniidaesubclass pantotheriasubclass magnoliidaestokes-adams syndromestockholders meetingstinking bean trefoilstep-down transformerstenotomus aculeatusstenopelmatus fuscusstenocarpus sinuatusstenocarpus salignussteel oneself againstst. thomas and principespurious correlationspreading bellflowerspousal relationshipspontaneous abortionspherical aberrationsphaeralcea coccineaspeech communicationspasmodic laryngitissouthwestern lip fernsouthern spatterdocksouthern carpathianssophora secundiflorasomatosensory systemsolanopteris bifronssociology departmentskeleton in the closetsir arthur conan doylesinus venosus scleraesino-tibetan languagesingular propositionsierra lodgepole pinesideroblastic anemiashortleaf yellow pineshirodkar's operationsewage disposal plantsesbania grandifloraserbia and montenegrosequoia wellingtoniasequoia sempervirenssequoia national parksequential operationsenecio triangularissenecio milkanioidessemiconductor devicesecondary amenorrheasecond epistle of johnsecond epistel of johnsecond earl of chathamsecond battle of ypresscots gaelic languagescorzonera hispanicascleroderma citrinumsciurus carolinensisscientific knowledgeschrodinger equationsceloporus undulatusscaphiopus hammondiisaxe-gothea conspicuasavings account trustsaurischian dinosaursatureja grandiflorasatellite televisionsarcoscypha coccineasanicula arctopoidessalpinctes obsoletussalpiglossis sinuatasalmon portland chasesales finance companysaint elias mountainssacramento mountainsrubus phoenicolasiusrotational nystagmusrose-colored starlingrobinia pseudoacaciarobert woodrow wilsonrobert burns woodwardrobert anson heinleinrichardson's geraniumrichard milhous nixonrhomboid minor musclerhinoceros unicornisrhamnus carolinianusrhamnus californicusrhagoletis pomonellareversionary annuityretrobulbar neuritisresurrection of jesusrestriction fragmentrespiratory quotientresistance pyrometerrepublic of singaporerepublic of san marinorepublic of indonesiaregional anaesthesiarefrigeration systemrefracting telescopereflecting telescopered shrubby penstemonreconnaissance planerauwolfia serpentinaqueen charlotte soundpyrophorus noctilucapurple-fringed orchispurple chinese housespulse-time modulationpulmonary congestionpteropus hypomelanuspsychotic depressionpsychological momentpseudomonas pyocaneaprosecuting attorneypropellant explosiveprogressive vacciniaproboscidea fragransprivate investigatorpriodontes giganteusprinceton universityprince eugene of savoyprimary dysmenorrheapresident washingtonpresident eisenhowerprepositional phraseprepositional objectprecocious dentitionpoterium sanguisorbapostural hypotensionposthypnotic amnesiaposterior facial veinpost-office box numberpopulus nigra italicapopulation scientistpolyprion americanuspolyporus tenuiculuspolyarteritis nodosapolice investigationpolanisia graveolenspolanisia dodecandrapoisson distributionpoisonous nightshadepoint-and-shoot camerapodocarpus elongatuspodiceps nigricollisplanck's radiation lawpin-tailed sandgrousephyllocladus alpinusphotographic densityphotogelatin processphoto-offset printingpholiota astragalinaphineas taylor barnumphase of cell divisionpharyngeal consonantphantom limb syndromepersonnel departmentpersonality disorderperonospora tabacinaperognathus hispidusperistedion miniatumperceptual constancypentobarbital sodiumpentecostal religionpenstemon serrulatuspenstemon fruticosuspenstemon davidsoniipenstemon cyananthuspennsylvanian periodpedionomus torquatuspeacekeeping missionpaul johannes tillichparkinsonia aculeatapan troglodytes veruspalace of westminsterpacific spiny dogfishover the counter stockotto neumann sverdrupostensive definitionosmanthus americanusoryzopsis hymenoidesoriental bittersweetorder stereospondyliorder selaginellalesorder saprolegnialesorder peronosporalesorder pelecaniformesorder hypermastiginaorder anthocerotalesorder anguilliformesorder aepyorniformesorchis papilionaceaeorange-blossom orchidoperational calculusoperating microscopeone thousand thousandone hundred sixty-fiveoncorhynchus kisutchon an individual basisoleandra neriiformisohio state universitynuphar sagittifoliumnothofagus solanderinothofagus menziesiinorthern storm petrelnorth-south directionnonvascular organismnonlinear distortionno matter what happensnilo-saharan languagenight-blooming cereusnicandra physaloidesnew world least weaselnevoid elephantiasisneurotrichus gibbsiinettleleaf goosefootnervus oculomotoriusnephrolepis exaltatanegative stimulationneftali ricardo reyesnational park servicenarrow-leaf penstemonmyxocephalus aenaeusmusicogenic epilepsymunchausen's syndromemultiple personalitymountain parsley fernmountain everlastingmother carey's chickenmorrison remick waitemontgomery's tuberclemonosodium glutamatemonoplane flying fishmononychus olecranusmonomorium pharaonismonocular microscopemonochromatic visionmonoblastic leukemiamitral valve stenosismirabilis longifloramercator's projectionmembranous labyrinthmegaloblastic anemiameclofenamate sodiummature-onset diabetesmass-action principlemasculine declensionmaryland golden astermarquise de montespanmarquise de maintenonmarital relationshipmarcus cocceius nervamanagerial economicsmammal semnopithecusmalvastrum coccineummagnoliid dicot genuslyndon baines johnsonlychins chalcedonicalukasiewicz notationlowell jackson thomaslouis comfort tiffanylotus tetragonolobuslord's resistance armylong-billed marsh wrenlolo-burmese languagelobotes surinamensislithophragma affinislipid granulomatosislink-attached stationlinguistic profilinglinguistic geographylinanthus dichotomuslimestone salamanderlibocedrus decurrensliatris pycnostachyaleslie howard stainerlepidothamnus fonkiileontodon autumnalisleonotis nepetifolialemmus trimucronatuslegionnaires' diseaselegal representationleccinum fibrillosumleast common multiplelaw of thermodynamicslatent schizophrenialaser interferometerlaissez-faire economylachnolaimus maximuslaburnum anagyroidesklinefelter syndromekilometres per secondkilometers per secondkeep one's eyes skinnedjuniperus silicicolajudgement in personamjoseph francis keatonjohn singleton copleyjohn robinson jeffersjohannes van der waalsjohannes peter mullerjohann sebastian bachjewish calendar monthjerome david salingerjapanese archipelagojames langston hughesjames harvey robinsonistiophorus albicansisraeli monetary unitisraeli defense forceislands of langerhansintraocular pressureinternational watersinternational systeminternal respirationinternal failure costinsulin shock therapyinstrument of tortureinflammatory diseaseinfectious hepatitisin everyone's thoughtsimmunologic responseimmunochemical assayimmune serum globulinidiomatic expressionhymenopterous insecthygrophorus turundushydrangea petiolarishugo von hofmannsthalhottentot's bread vinehorse-chestnut familyhomo heidelbergensisholocentrus coruscusholocanthus tricolorholarrhena pubescenshimalaya honeysucklehighlands of scotlandhighest common factorheteroscelus incanusheteropterous insecthermann joseph mullerhelen newington willshedysarum coronariumhayreddin barbarossahans holbein the elderhamamelid dicot genushalogeton glomeratushaemulon macrostomumhaemanthus coccineusgymnopilus validipesgustatory perceptiongulf of saint lawrencegrowth-onset diabetesgreen mushroom pimplegreco-roman wrestlinggreat smoky mountainsgrammatical cohesiongrainy club mushroomsgovernment officialsgovernador valadaresgossypium barbadenseglenn hammond curtissgeosynchronous orbitgenus ustilaginoideagenus tropidocloniongenus stenopterygiusgenus staurikosaurusgenus staphylococcusgenus ruptiliocarpongenus psittacosaurusgenus proterochampsagenus plesianthropusgenus plasmodiophoragenus pithecellobiumgenus phyllorhynchusgenus photoblepharongenus phalaenoptilusgenus periophthalmusgenus parthenocissusgenus ouranopithecusgenus neohygrophorusgenus myrtillocactusgenus mulloidichthysgenus mastigoproctusgenus lemaireocereusgenus hypsiprymnodongenus himantoglossumgenus heterocephalusgenus hemipteronatusgenus gymnadeniopsisgenus fuscoboletinusgenus diplopterygiumgenus dendrocolaptesgenus dactylocteniumgenus coccothraustesgenus chrysospleniumgenus chordospartiumgenus choeronycterisgenus chlamydosaurusgenus chaetodipterusgenus ceratostomellagenus catoptrophorusgenus castanospermumgenus bougainvillaeagenus amorphophallusgentianopsis detonsagentianopsis crinitagentianopsid proceragenitourinary systemgenetic constitutiongaylussacia frondosagastrocnemius musclegardenia jasminoidesgangrenous emphysemafuel injection systemfrench-fried potatoesfraxinus carolinianafrancois-marie arouetfrancisco jose de goyafouquieria splendensfoot-and-mouth diseasefluorocarbon plasticflorida strangler figfloccose chanterellefive-point bishop's capfirst lateran councilfirst baron passfieldfirst baron beveridgefibrovascular bundleferdinand julius cohnfamily uranoscopidaefamily struthionidaefamily mastodontidaefamily kinosternidaefamily dicksoniaceaefamily desmodontidaefamily caenolestidaeexternal failure costexogenous depressionexistential operatorexchange transfusioneustoma grandiflorumeuropean parsley ferneuropean mountain asheuropean honeysuckleeuropean bog asphodeleuropean black grouseeuropean beggar-tickseumeces skiltonianuserythrina lysistemonerigeron aurantiacusequilibrium constantepiscia dianthifloraengine cooling systemencephalartos cafferenabling legislationemployee savings planemberiza schoenicluselephantiasis scrotielectronics industryelectronic messagingelectron microscopicelectrical condenserelanoides forficatuseichhornia crassipesedward osborne wilsoneconomics professioneconomics departmenteconomic consumptioneburophyton austinaeeastern pasque flowerdysthymic depressiondusicyon cancrivorusdouble decompositiondocosahexaenoic aciddivision gymnomycotadivision chrysophytadivision chlorophytadisrupting explosivedisk operating systemdisability of walkingdiospyros virginianadilleniid dicot genusdifference thresholddictyopterous insectdiclofenac potassiumdicksonia antarcticadiagnostic techniquedepartment of physicsdepartment of justicedepartment of historydepartment of defensedemetrius i of macedondawson's encephalitisdavid oliver selznickdaniel hudson burnhamcynomys ludovicianuscucumis melo inodoruscross-country jumpingcrocodylus niloticuscristobal balenciagacriminal prosecutioncreeping st john's wortcottonmouth moccasincorvus brachyrhyncoscortinarius gentiliscornelia otis skinnercore shooting machinecordyline terminaliscopernicia australisconvolvulus arvensisconvertible securityconversation stoppercontrolling interestcontrolled substancecontinuant consonantcontinental congressconstantine the greatconspiracy of silenceconservative judaismconjunctivitis aridaconepatus leuconotusconditioned responseconditional responsecondenser microphoneconcessive adverbialconceptual semanticscomputer-aided designcompression fracturecomprehensive schoolcomplementary anglescompensating balancecompartment pressurecommunity of scholarscommunicable diseasecommon spotted orchidcommodities exchangecolor television tubecolloidal suspensioncollinsia parvifloracognitive psychologycnemidophorus tigrisclosed-angle glaucomaclose supporting fireclitocybe subconnexaclass euglenophyceaeclass anthoceropsidaclaes thure oldenburgcivil rights movementcivic responsibilitycitellus richardsonicinchona officinalischurch of scientologychromosonal disorderchrome-tungsten steelchlamydosaurus kingicheiranthus allioniicharlestown navy yardcharles robert darwincharles hardin holleychaenomeles speciosachaenomeles japonicaceylon bowstring hempcerastium tomentosumcentropistes striatacentral veins of livercentaurium calycosumcellular respirationcelestial navigationcayman islands dollarcation-exchange resincatastrophic illnesscassiope mertensianacartesian coordinatecarpodacus mexicanuscarpocapsa pomonellacarlovingian dynastycarduelis hornemannicaragana arborescenscanticle of canticlescaloosahatchee canalcalochortus kennedyicalocedrus decurrenscalling into questioncalifornia whipsnakecalifornia sagebrushcaesalpinia coriariacabassous unicinctusc. northcote parkinsonbuy-and-bust operationbulletin board systembuilding supply storebryanthus taxifoliusbroadcasting stationbroadcasting companybroadcast schedulingbritish commonwealthbrightness constancybouviers des flandresbosonic string theorybolognese pasta sauceboletus chrysenteronbloodless revolutionblack-stem spleenwortbiserial correlationbinocular microscopebinge-eating syndromebenedetto odescalchibaron clive of plasseybarbra joan streisandbaptist denominationbanksia integrifoliabalto-slavic languagebaking-powder biscuitautomobile insuranceaustralian sword lilyaustralian hare's footaustralian cockroachaugust von wassermannatriplex lentiformisastropogon stellatusastatic galvanometeraspiration pneumoniaartemision at ephesusarrested developmentarnold joseph toynbeearna wendell bontempsarmillaria ponderosaarctictis bintourongaraucaria columnarisanti-submarine rocketanthyllis barba-jovisantheropeas wallaceiantheraea polyphemusanterior labial veinsanemone occidentalisandropogon scopariusanatomical structureanatomical sphincteranaclitic depressionamphibious operationamerican saddle horseamerican mountain ashamerican bog asphodelamaryllis belladonnaalsobia dianthifloraalliaria officinalisalexander ii of russiaalcoholics anonymousagnes gonxha bojaxhiuagastache nepetoidesagastache foeniculumafroasiatic languageaerobacter aerogenesadams-stokes syndromeacute pyelonephritisacanthosis nigricansacanthisitta chlorisabsorption indicator1st baron beaverbrook