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707 words ending with um

abomasum acetabulum acetum aciculum aconitum actinium addendum adytum aecidium aecium aerobium agendum ageratum alarum album alburnum algum allium allodium alluvium alum aluminium aluminum alyssum ambulacrum americium ammonium amylum androecium animalculum antebellum antependium antheridium anthodium anthurium antirrhinum antiserum antrum apothecium appressorium apterium aquarium arboretum arcanum archaebacterium archegonium archesporium argentum argumentum armamentarium asarum ascidium ascogonium aspergillum asphaltum asylum athenaeum atheneum atrium auditorium aurum bacterium baculum barium basidium bdellium begum berkelium beryllium biennium blackgum blellum bluegum bothrium botulinum brachium bronchium bryophyllum bubblegum bum bunkum cadmium caecum caesium cafetorium caladium calcaneum calcium caldarium californium calvarium cambium candelabrum capitulum capsicum cardamum carpogonium castoreum cecum cementum centrum centum cerebellum cerebrum cerium cesium chetrum chillum chondrocranium chromium chrysanthemum chum ciborium cilium cinerarium cingulum cladophyllum claustrum clitellum clostridium coagulum coccidium cockalorum colchicum coliseum collegium colloquium colluvium collyrium colosseum colostrum columbarium columbium compendium condominium conidium conium consortium contagium continuum conundrum coremium corium corrigendum corundum corynebacterium cranium credendum crematorium crinum crissum criterium crumbum ctenidium cubiculum cundum cuprum curium curriculum cyanobacterium cymatium cymbidium cypripedium datum decamethonium decennium decorum definiendum degum delirium delphinium dentalium desideratum deuterium diazonium dichasium dictum didymium diestrum diluvium dinkum dirdum disequilibrium diverticulum dominium doronicum dorsum doum drum dumdum duodenum durum dysprosium eardrum effluvium einsteinium electrum eluvium elytrum emporium encomium endocardium endometrium endosteum endothecium endothelium enterobacterium epicardium epicedium epidendrum epimysium epineurium epithalamium epithelium equilibrium equisetum erbium erratum estrum eulogium euphonium europium exemplum exordium extremum exuvium factotum fanum fermium ferrum filum flabellum flagellum florilegium folium forum fraenum francium frenulum frenum frustum fulcrum furculum gadolinium galbanum gallium gametangium gaum gelsemium geranium germanium geum glochidium glucinum glum gonidium gonium granum grum guaiacum guaiocum gum gymnasium gynaeceum gynaecium gynecium gynoecium gypsum hafnium hahnium harmonium haustellum haustorium helium herbarium hesperidium hexamethonium hibernaculum hilum hokum holmium honorarium hoodlum hormogonium hospitium hum humdrum hydronium hymenium hypanthium hypogeum ileum ilium illuvium imaum imperium incunabulum indecorum indicium indium indusium infundibulum inoculum interregnum involucrum ionium iridium ischium iterum jejunum jorum jugulum jugum kalium kettledrum khoum labarum labdanum labellum labium labrum laburnum ladanum lanthanum larum latifundium laudanum lawrencium lebensraum leprosarium linoleum linum lithium lixivium locum lomentum lustrum lutecium lutetium luteum lyceum lycopodium magisterium magnesium magnum manubrium marsupium masurium mausoleum maximum mazaedium meconium mediastinum medium meerschaum megasporangium memorandum mendelevium menstruum mentum mesembryanthemum mesothelium mezereum microsporangium milium millennium minimum minium miracidium modicum molybdenum momentum monochasium moratorium mum muonium museum mycelium mycobacterium myocardium nasturtium natatorium natrium neodymium nephridium neptunium neum ngultrum niobium nobelium nonaluminum nonequilibrium nonpetroleum nostrum notum oakum oceanarium odeum odium odontoglossum oestrum oidium oleum olibanum omasum omentum ommatidium oncidium onium oogonium operculum opium opossum opprobrium optimum opusculum organum origanum osculum osmeterium osmiridium osmium ostensorium ostium outswum ovum pablum pabulum palladium pallium pancratium pandemonium panicum panjandrum pantoum paramecium paramylum parapodium patagium peculium pelargonium pendulum penicillium peplum peponium pericardium perichondrium pericranium peridium perimysium perineum perineurium perionychium periosteum perithecium peritoneum petrolatum petroleum philtrum phosphonium phyllodium phylum pileum pinetum pittosporum planetarium plasmodium plastrum platinum plectrum plenum plum plumbum plutonium podium podophyllum polemonium pollinium polonium polygonum pomatum positronium possum postbellum postpartum potassium practicum praesidium praseodymium premium presidium primordium principium procambium proctodaeum promethium pronotum propylaeum proscenium prostomium protactinium prothalamium prothallium protium psalterium pseudopodium psyllium pterygium pudendum puerperium puparium pycnidium pygidium pyrethrum pyxidium quadrennium quadrivium quantum quinquennium quorum radiostrontium radiothorium radium ramentum rectum referendum refugium reptilium residuum responsum reticulum retinaculum rhenium rheum rhizobium rhodium rosarium rostellum rostrum rubidium rum ruthenium rutherfordium sacrarium sacrum sagum samarium sanatorium sanctum sanitarium sanitorium sargassum sarmentum scandium scholium sclerotium scriptorium scrotum scrum scum scutellum scutum seaborgium sebum secundum sedilium sedum selenium sempervivum sensillum sensorium sensum septarium septum sequestrum serum sestertium silicium simulacrum sistrum skellum skookum slum slumgum smeddum sodium solanum solarium solatium solum sorghum spectrum speculum spermagonium spermatium spermatogonium sphagnum spiculum spirillum splenium sporangium sporogonium sputum stadium staminodium stannum sternum stewbum stibium stickum stomodaeum stomodeum stramonium stratum strontium strum stum stumblebum stylopodium subgum suboptimum subphylum substratum succedaneum sudarium sudatorium sugarplum sulfonium sum superpremium superstratum swum syconium sympodium symposium syncytium talcum tantalum tantrum tapetum technetium tectum tedium teetotum tegmentum telium tellurium tenaculum terbium tergum termitarium terrarium tetotum tetrazolium thallium thorium thrum thulium timpanum titanium tomentum transuranium trapezium triclinium triduum triennium trifolium triforium trillium triticum tritium trivium tympanum ultimatum ultravacuum unguentum unnilhexium unnilpentium unnilquadium uranium uredinium uredium uropygium vacuum vanadium variorum vasculum velarium vellum velum veratrum vestigium vexillum viaticum viburnum vinculum vivarium wampum xiphisternum ytterbium yttrium yum zirconium zoarium zoecium zooecium zoosporangium