13 letter words ending in on in the mammoth uncensored word list.

academisation academization acceptilation accommodation accreditation acculturation accustomation acetification acidification actualisation actualization adipoceration admargination afforestation agglomeration agglutination aluminisation aluminization amnioinfusion amplification anabolisation anabolization anatomisation anatomization anejaculation anematization anglicisation anglicization anglification animadversion animalisation animalization anteroclusion anteroflexion anticollision anticorrosion antideflation antieducation antievolution antioxidation antipollution antirecession antireduction antirejection apexification appropriation approximation arabicisation arabicization argumentation argyrodendron aridification aromatisation aromatization assassination authorisation authorization autodigestion autoeducation autoinduction autoinfection autoinjection autooxidation autoreduction averruncation backwardation bacterisation bacterization balkanisation balkanization barbarisation barbarization beatification beneficiation bicolouration bioconversion biofiltration bioimmuration bothrodendron boustrophedon brominisation brominization brutalisation brutalization brutification calcification cantonisation cantonization caprification carbolisation carbolization carbonisation carbonization carbonylation carboxylation carburisation carburization carcinisation carcinization cardioversion carnification cartelisation cartelization casualisation casualization catechisation catechization catharisation catharization cathodisation cathodization caudalization cauterisation cauterization centesimation cephalisation cephalization certification chainreaction chemisorption chilectropion chylification chymification cicatrisation cicatrization circumduction circumflexion circumvention clarification cliticisation cliticization coaggregation coalification cocainisation cocainization cochairperson cocirculation cocultivation codeclination coexploration cognomination cointegration coliplication collaboration colourisation colourization columnisation columnization commemoration commiseration communication communisation communization compagination comprehension concatenation concentration condescension confabulation confarreation confederation configuration conflagration confrontation connumeration consideration consolidation conspurcation constellation consternation constupration contamination contemplation contrabassoon contraception contradiction contragestion contravention contristation copperisation copperization cornification corroboration costimulation cottonisation cottonization councilperson counteraction countermotion counterpoison counterreason cretification cretinisation cretinization crossdivision crossquestion crucification cuboctahedron culturisation culturization customisation customization cycloaddition damnification dandification deacetylation deamidisation deamidization deaminisation deaminization deattribution decapsulation decarbonation decarburation decerebration decoagulation decolouration decompilation decomposition decompression deconfliction deconvolution decortication decrepitation deduplication defibrination defibrization deforestation deglutination degranulation demethylation demonstration demyelination densification denticulation deobfuscation deodorisation deodorization deoxidisation deoxidization deoxygenation dephlegmation derealisation derealization derecognition derequisition derestriction dermaskeleton dermoskeleton desegregation desertisation desertization despotisation despotization desulfonation desulfuration deterioration determination dextroduction diabolisation diabolization diacatholicon diazotisation diazotization dieselisation dieselization diffarreation dignification dimethylation dinoturbation disannexation discoloration discommission disconcertion disconnection disestimation disfiguration disinhibition disinvitation disobligation disoccupation disordination displantation dispossession disproportion disreputation dissemination disseveration dissimilation dissimulation documentation dogmatisation dogmatization dollarisation dollarization domestication domiciliation dorsalization dramatisation dramatization ductilisation ductilization dulcification duocentillion duodecahedron economisation economization eigenfunction electrisation electrization electrocution electrofusion emphasisation emphasization encapsidation encapsulation enculturation epidotisation epidotization epimerisation epimerization epiphenomenon epitomisation epitomization epitrachelion equilibration equipartition eroticisation eroticization etchplanation eudicotyledon euthanisation euthanization evangeliarion exauctoration exauthoration excortication expectoration expostulation expropriation extermination exteroception extispication extrapolation extraposition extravagation extravasation factorisation factorization falsification fancification fasciculation ferritisation ferritization fertilisation fertilization fetishisation fetishization feudalisation feudalization fiscalisation fiscalization fistulization floccillation formalisation formalization formulisation formulization fortification fossilisation fossilization fractionation fragmentation frequentation funambulation gaelicisation gaelicization gallicisation gallicization galvanisation galvanization ganglioneuron gassification gentilization germanisation germanization gesticulation ghettoisation ghettoization glamorisation glamorization globalisation globalization glorification glucosylation glycerination glycocylation glycosylation gnathabelodon granitisation granitization graticulation gratification greatgrandson gutterization haemodilution hallucination harmonisation harmonization haruspication hellenisation hellenization hendecahedron herborisation herborization heroicisation heroicization heroinisation heroinization hexoctahedron hibernisation hibernization homeoteleuton horrification horripilation hyalinisation hyalinization hybridisation hybridization hydrogenation hydrolysation hydrolyzation hydroskeleton hydroxylation hyperfunction hyphenisation hyphenization hypnotisation hypnotization hypohydration hypoperfusion hyposecretion hypothecation hypotrochogon impenetration imperforation impersonation impignoration impostumation impropriation improvisation improvization incapsulation incarceration incardination incorporation incrimination indisposition indistinction individuation induplication inexpectation infraposition ingurgitation inobservation instantiation intercalation interdominion interelectron interlocation interlocution interlunation interoception interpolation interposition interpunction interrelation interrogation interspersion intervolution intravasation introgression introspection investigation irrecognition isomerisation isomerization italicisation italicization jargonisation jargonization jellification jollification justification juxtaposition kaolinisation kaolinization labefactation labialisation labialization lactonisation lactonization laevogyration laevorotation lateroduction lateroversion legendisation legendization lemmatisation lemmatization lepidodendron leucitohedron leucocytozoon lichenisation lichenization lignification lignitisation lignitization linearisation linearization linguoversion lithification luteinisation luteinization machicolation machinisation machinization magnetisation magnetization magnification malabsorption maladaptation malconduction manifestation marbleization marketisation marketization martyrisation martyrization matriculation mechanisation mechanization medialisation medialization mediatisation mediatization mellification mentalisation mentalization mercerisation mercerization mercurisation mercurization mesencephalon mesmerisation mesmerization metacognition metallisation metallization metencephalon methodisation methodization metricisation metricization metrification microdeletion microincision micronisation micronization microplankton minedetection minirebellion minirecession misactivation misadaptation misallocation misascription misassumption miscegenation miscoloration misconception misconclusion misconnection miscorrection misderivation misestimation misevaluation misexpression misimpression misnavigation misoccupation mispagination misperception mispersuasion misproportion misregulation mitochondrion mnemonization modernisation modernization mollification mongolisation mongolization monocotyledon mononitration morbidisation morbidization mortification multifunction multijunction multilocation multiposition multitrillion mummification mundification mutualisation mutualization myelinisation myelinization mystification mythicisation mythicization mythification nannoplankton narcotisation narcotization necessitation nectarisation nectarization neologisation neologization neuroganglion neuroskeleton nickelisation nickelization nitridisation nitridization nitrification nitrogenation nitrosylation noctivagation nonabsorption nonaggression nonalienation nonaspiration noncommission noncompaction noncompletion noncompulsion nonconception nonconcession nonconclusion nonconduction nonconfession noncongestion nonconnection nonconversion nondelegation nondemolition nondeposition nondepression nondistortion nondomination nonexhibition nonexpression nonextraction nongentillion noninhibition noninsulation nonlimitation nonlitigation nonmedication nonmotivation nonperversion nonpossession nonproduction nonreflection nonrefraction nonregression nonregulation nonrelaxation nonrepetition nonrepression nonresolution nonsaturation nonsimulation nonsubmission nonsubversion nonsuccession nonsuggestion nonsupression nonsuspension nontoleration nontransition nonvalidation nonvegetation normalisation normalization notiomastodon nullification objectivation octodecillion octuplication opacification operatisation operatization oppignoration orchestration ornamentation ostracisation ostracization outfiltration overagitation overassertion overattention overcondition overdetection overdeviation overdiffusion overeducation overemulation overexpansion overextension overhydration overimitation overinflation overlactation overnutrition overoxidation overprovision overreduction overretention oversecretion overvaluation oxygeneration oxygenization packetisation packetization palletisation palletization palmification pandiculation panharmonicon pantagruelion paralipomenon parasyntheton parencephalon participation passivisation passivization patronisation patronization pauperisation pauperization pediplanation pedunculation pelletisation pelletization peneplanation penicillation peptonisation peptonization perambulation peregrination periodisation periodization perlustration perscrutation perseveration personisation personization pervaporation petrification petrolisation petrolization phellodendron phenolisation phenolization phonetisation phonetization photoelectron photoemission photoreaction phytoplankton picturisation picturization pidginisation pidginization platinisation platinization plebification pluralisation pluralization podsolisation podsolization podzolisation podzolization poeticisation poeticization pollenisation pollenization pollicitation pollinisation pollinization polycotyledon pontification postcondition posterisation posterization postinfection postinjection postisolation postrecession postreduction postremission powderisation powderization preactivation preadaptation preadmonition preallocation prealteration preambulation precipitation precoloration precombustion preconception preconduction preconfession preconisation preconization preconvention preconversion preconviction prededication predefinition predelegation predomination preestimation preexcitation preextraction prefiguration prefiltration pregeneration preimplantion preinspection preinsulation preinvitation preinvocation preirrigation prejudication prelimitation premedication premeditation prenomination preobligation preoccupation preordination prepossession preproduction prerevolution preseparation presubmission pretelevision pretermission prevarication privatisation privatization proconception progeneration proliferation prolification pronomination pronunciation propriception protuberation psychosurgeon puebloization pulverisation pulverization quadrisection qualification quindecillion racialisation racialization radialisation radialization radiolocation radiumisation radiumization randomisation randomization rasterisation rasterization ratiocination reacclimation reacquisition reaffiliation reaffirmation reaggravation reaggregation reapplication rearbitration reassociation reattribution rebaptisation rebaptization recalcination recalculation recalibration recaptivation recarbonation recelebration reciprocation recirculation recoagulation recolouration recombination recompetition recompilation recomposition recompression recomputation recrimination rectification recultivation redeclaration redescription redesignation redisposition redissolution reduplication reembarkation reenumeration reenunciation reexamination reexploration reexportation refabrication refascination refocillation reforestation reformulation refrigeration regermination regimentation regurgitation rehumiliation reimagination reimportation reincarnation reindentation reinfestation reinnervation reinoculation reinscription reinspiration reinstitution reinstruction reintegration reirradiation reliquidation relubrication remethylation remonstration remyelination renegotiation reobfuscation reobservation reorientation reoxygenation repenetration repercolation reperforation repostulation repropagation reprosecution reprovocation republication repunctuation resegregation restimulation restipulation resublimation resuppression resuscitation resyndication retranslation retroflection retrogression retrospection reunification reutilisation reutilization revaccination revendication reventilation reverberation revindication rhodanisation rhodanization rhythmisation rhythmization ritualisation ritualization routinisation routinization rubricisation rubricization rubrification rudimentation ruggedisation ruggedization rumelgumption rumlegumption sacralisation sacralization saproplankton scalenohedron scarification scenarisation scenarization scintillation scorification sectorisation sectorization sedimentation selfassertion selfdirection selfeducation selfinflation semipalmation semipronation sensitisation sensitization sequelisation sequelization sequestration serialisation serialization seroreversion sescentillion sexploitation sexualisation sexualization shamanisation shamanization signalisation signalization signification sissification socialisation socialization solemnisation solemnization sonnetisation sonnetization sorbitisation sorbitization sovietisation sovietization specification spheristerion spifflication spiralisation spiralization stabilisation stabilization stegomastodon sterilisation sterilization strangulation structuration stylopisation stylopization suballocation subcollection subcommission subdefinition subgeneration subindication subinvolution subirrigation subordination subpopulation subsaturation subsidisation subsidization subtilisation subtilization suffumigation sulcalization sulfatisation sulfatization sulfurisation sulfurization summarisation summarization superaddition superdivision supereruption superfetation supernatation superposition supplantation syllabication syllogisation syllogization symbolisation symbolization syntonisation syntonization syphilisation syphilization systemisation systemization tailorisation tailorization tantalisation tantalization tariffication tartarisation tartarization telencephalon teleportation temporisation temporization tenderisation tenderization terrorisation terrorization testification tetartohedron thematisation thematization thermotension thiocyanation thurification torrefication totipalmation toxicodendron toxiinfection transcreation transcription transgression translocation transmutation transpiration transposition trapezohedron trecentillion triangulation trigintillion trilateration trimerisation trimerization trochodendron tuberculation ultramarathon unacclimation underaeration underdilation underdilution undersedation uralitisation uralitization vacuolisation vacuolization vandalisation vandalization vapourisation vapourization variolisation variolization vassalisation vassalization vectorisation vectorization verbalisation verbalization verbification verbigeration vermiculation vernalisation vernalization versification victimisation victimization villagisation villagization visualisation visualization vitrification vividiffusion volcanisation volcanization vulcanisation vulcanization vulgarisation vulgarization weatherperson winterisation winterization wussification xiphiplastron yuppification zeolitisation zeolitization zincification zinkification zombification