16 letters
14 letters
13 letters
12 letters
- appressorium22
- archesporium24
- cladophyllum30
- diverticulum26
- epithalamium25
- hibernaculum27
- infundibulum28
- nonpetroleum22
- perionychium27
- praseodymium25
- protactinium23
- prothalamium25
- pseudopodium25
- quinquennium39
- radiothorium19
- spermagonium25
- superpremium26
- superstratum20
- transuranium19
- unnilpentium24
- unnilquadium31
- xiphisternum29
11 letters
- animalculum25
- antependium21
- antheridium19
- antirrhinum19
- archegonium23
- aspergillum22
- bryophyllum29
- californium23
- candelabrum24
- carpogonium24
- clostridium20
- columbarium26
- condominium24
- corrigendum22
- crematorium21
- cypripedium27
- definiendum22
- desideratum17
- einsteinium17
- endocardium21
- endometrium20
- endothecium22
- endothelium20
- equilibrium29
- florilegium22
- gametangium23
- hesperidium21
- hormogonium23
- incunabulum26
- interregnum19
- latifundium22
- leprosarium19
- magisterium20
- mediastinum20
- mendelevium25
- mesothelium21
- monochasium24
- nonaluminum23
- ostensorium16
- pandemonium24
- pelargonium22
- penicillium24
- pericardium22
- pericranium22
- perineurium20
- perithecium23
- phosphonium26
- pittosporum21
- planetarium20
- podophyllum28
- positronium19
- proctodaeum22
- prothallium22
- quadrennium28
- retinaculum21
- scriptorium21
- sempervivum29
- sporogonium21
- staminodium20
- stylopodium22
- succedaneum24
- termitarium18
- tetrazolium25
- ultravacuum25
- unnilhexium28
10 letters
- acetabulum22
- ambulacrum25
- androecium19
- antebellum20
- apothecium22
- argumentum21
- ascogonium20
- auditorium16
- cafetorium20
- cerebellum22
- cinerarium18
- cockalorum25
- colloquium29
- compendium25
- consortium18
- curriculum23
- delphinium22
- dysprosium20
- epicardium21
- epidendrum20
- epineurium19
- epithelium20
- gadolinium19
- glochidium23
- haustellum19
- haustorium17
- honorarium17
- hypanthium24
- involucrum24
- kettledrum20
- lawrencium22
- lebensraum19
- lycopodium24
- meerschaum22
- meitnerium18
- memorandum22
- millennium21
- miracidium21
- molybdenum25
- moratorium17
- myocardium23
- nasturtium16
- natatorium15
- nephridium21
- oceanarium18
- ommatidium21
- opprobrium23
- osmeterium17
- osmiridium18
- pancratium21
- panjandrum29
- paramecium23
- parapodium21
- perimysium22
- periosteum17
- peritoneum18
- petrolatum18
- phyllodium24
- plasmodium22
- polemonium22
- postbellum22
- postpartum20
- praesidium18
- primordium21
- principium24
- procambium26
- promethium22
- propylaeum23
- proscenium21
- prostomium20
- psalterium18
- puerperium21
- quadrivium29
- referendum19
- sanatorium15
- sanitarium15
- sanitorium15
- sclerotium18
- seaborgium19
- sequestrum24
- sestertium14
- simulacrum22
- spermatium20
- sporangium20
- stomodaeum18
- stramonium18
- stumblebum25
- suboptimum24
- substratum18
- sudatorium16
- technetium20
- triclinium19
9 letters
- aluminium19
- americium19
- anthodium17
- anthurium17
- antiserum14
- arboretum16
- asphaltum19
- athenaeum16
- bacterium19
- berkelium21
- beryllium20
- botulinum19
- bronchium22
- bubblegum26
- calcaneum21
- caldarium18
- calvarium21
- capitulum21
- castoreum16
- claustrum18
- clitellum19
- coccidium23
- colchicum25
- collegium20
- colluvium23
- collyrium20
- colosseum17
- colostrum17
- columbium24
- contagium19
- continuum19
- conundrum20
- credendum19
- criterium16
- ctenidium18
- cubiculum25
- cymbidium25
- decennium19
- dentalium16
- deuterium15
- diazonium24
- dichasium19
- doronicum18
- effluvium25
- endosteum15
- epicedium20
- epimysium21
- equisetum23
- euphonium20
- flabellum22
- flagellum21
- gelsemium19
- germanium19
- gymnasium21
- gynaeceum21
- gynaecium21
- gynoecium21
- harmonium19
- herbarium18
- hospitium18
- hydronium19
- indecorum18
- lanthanum18
- magnesium19
- manubrium21
- marsupium20
- mausoleum18
- mazaedium26
- menstruum18
- neodymium20
- neptunium19
- operculum21
- opusculum22
- palladium19
- paramylum22
- petroleum17
- plutonium19
- pollinium19
- polygonum22
- potassium16
- practicum22
- presidium17
- pterygium20
- pycnidium23
- pyrethrum20
- reptilium17
- responsum17
- reticulum18
- rhizobium27
- rostellum15
- ruthenium17
- sacrarium16
- sargassum15
- sarmentum17
- scutellum19
- sensillum16
- sensorium14
- septarium16
- spirillum18
- stomodeum17
- strontium14
- subphylum25
- sugarplum20
- sulfonium19
- sympodium22
- symposium21
- syncytium21
- tegmentum19
- tellurium16
- tenaculum19
- terrarium13
- trapezium25
- triennium15
- trifolium17
- triforium16
- ultimatum18
- unguentum19
- uredinium16
- uropygium21
- vestigium19
- ytterbium18
- zirconium26
8 letters
- abomasum18
- aciculum20
- aconitum16
- actinium16
- addendum16
- aecidium16
- aerobium15
- ageratum14
- alburnum18
- allodium15
- alluvium19
- aluminum18
- ammonium19
- apterium15
- aquarium22
- argentum15
- ascidium16
- atheneum15
- basidium16
- bdellium18
- biennium17
- blackgum25
- bothrium17
- brachium20
- caladium17
- capsicum21
- cardamum19
- cementum19
- cerebrum18
- chromium20
- ciborium18
- cingulum20
- coagulum19
- coliseum16
- conidium17
- coremium18
- corundum18
- cymatium20
- delirium14
- didymium19
- diestrum13
- diluvium19
- dominium17
- duodenum16
- electrum16
- emporium18
- encomium19
- eulogium16
- europium16
- exemplum26
- exordium20
- extremum22
- factotum18
- francium19
- frenulum18
- furculum21
- galbanum19
- geranium15
- glucinum20
- gonidium16
- guaiacum18
- guaiocum18
- gynecium20
- hymenium20
- hypogeum21
- illinium15
- illuvium19
- imperium18
- indicium17
- indusium15
- inoculum18
- labdanum18
- labellum18
- laburnum18
- laudanum16
- linoleum15
- lixivium24
- lomentum17
- lutecium17
- lutetium14
- masurium16
- meconium19
- mezereum24
- momentum19
- mycelium21
- ngultrum17
- nobelium17
- olibanum17
- oncidium17
- oogonium15
- origanum15
- patagium17
- peculium20
- pendulum19
- peponium19
- peridium16
- perineum16
- philtrum18
- plastrum16
- platinum17
- plectrum19
- polonium17
- pronotum16
- psyllium19
- pudendum19
- puparium19
- pygidium20
- pyxidium25
- ramentum16
- refugium18
- residuum14
- rosarium12
- rubidium17
- samarium15
- scandium17
- scholium18
- secundum18
- sedilium14
- selenium14
- silicium16
- solarium13
- solatium13
- spectrum18
- speculum20
- sphagnum20
- spiculum20
- splenium17
- sudarium14
- syconium18
- tantalum14
- teetotum12
- thallium16
- timpanum19
- titanium13
- tomentum16
- trillium14
- triticum15
- tympanum21
- vanadium18
- variorum16
- vasculum21
- velarium17
- veratrum16
- vexillum25
- viaticum19
- viburnum21
- vinculum22
- vivarium20
- zooecium24
7 letters
- agendum15
- alodium13
- alyssum14
- arcanum15
- baculum19
- blellum17
- bluegum18
- bohrium16
- cadmium18
- caesium14
- calcium18
- cambium20
- centrum15
- chetrum16
- chillum18
- cranium15
- crissum14
- crumbum21
- decorum15
- dubnium17
- eardrum12
- eluvium17
- elytrum14
- erratum11
- exuvium23
- fermium17
- fraenum15
- frustum15
- fulcrum19
- gallium15
- hafnium17
- hahnium16
- hassium13
- holmium17
- hoodlum15
- humdrum18
- iridium12
- ischium16
- jejunum31
- jugulum25
- labarum15
- ladanum14
- lithium14
- lustrum13
- maximum24
- minimum18
- modicum18
- muonium16
- natrium12
- niobium15
- nostrum12
- oestrum11
- omentum15
- opossum14
- optimum17
- organum14
- osculum16
- outswum15
- pabulum19
- pallium16
- panicum18
- pantoum15
- pinetum15
- plumbum22
- pomatum17
- premium17
- protium14
- quantum22
- rhenium14
- rhodium14
- rostrum11
- sanctum15
- scrotum14
- sistrum11
- skellum17
- skookum19
- slumgum18
- smeddum16
- solanum13
- sorghum15
- stadium12
- stannum13
- sternum12
- stewbum17
- stibium14
- stickum18
- stratum11
- tantrum12
- tapetum14
- terbium14
- tetotum11
- thorium13
- thulium15
- triduum13
- tritium11
- trivium15
- uranium13
- uredium13
- yttrium13
- zoarium20
- zoecium23
6 letters
- acetum13
- adytum13
- aecium13
- alarum11
- allium12
- amylum16
- antrum11
- asarum10
- asylum13
- atrium10
- barium13
- bunkum19
- caecum16
- centum14
- cerium13
- cesium13
- cilium14
- conium14
- corium13
- crinum14
- cundum16
- cuprum17
- curium14
- dictum14
- dinkum16
- dirdum12
- dorsum11
- dumdum16
- erbium13
- estrum10
- ferrum13
- folium14
- frenum14
- gonium13
- granum13
- gypsum17
- helium13
- indium12
- ionium11
- iterum10
- kalium15
- labium14
- labrum14
- luteum12
- lyceum16
- magnum16
- medium14
- mentum14
- milium14
- minium14
- museum14
- oidium11
- omasum13
- osmium13
- ostium10
- pablum17
- peplum17
- phylum18
- pileum14
- plenum15
- podium14
- possum13
- quorum20
- radium11
- rectum13
- regnum13
- sacrum13
- scutum14
- sensum11
- septum13
- sodium11
- sputum14
- subgum16
- talcum14
- tectum13
- tedium11
- telium11
- tergum12
- vacuum18
- vellum16
- wampum19
5 letters
- album13
- algum12
- aurum10
- begum14
- cecum15
- datum10
- degum12
- durum11
- fanum13
- filum13
- forum12
- hilum12
- hokum15
- ileum10
- ilium10
- imaum12
- jorum18
- jugum21
- khoum15
- larum10
- linum11
- locum13
- notum10
- oakum13
- odeum10
- odium10
- oleum10
- onium10
- opium12
- rheum11
- sagum11
- scrum12
- sebum12
- sedum10
- serum9
- solum10
- strum9
- thrum11
- velum14
4 letters
2 letters