18-Letter Words Containing: I,S,O,M
(In Any Order)
There are 165 18 letter words,
586 18 letter phrases and
0 18 letter abbr's with
I,S,O,M in.
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| 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 (165)
- telecommunications
- transmogrification
- oversimplification
- spectrophotometric
- hyperaldosteronism
- paleoclimatologist
- verisimilitudinous
- uniformitarianisms
- uncompromisingness
- ultramicroscopical
- ultraconservatisms
- triboluminescences
- transilluminations
- transformationally
- thrombophlebitides
- thermoplasticities
- thermoluminescence
- superminicomputers
- superadministrator
- submicroscopically
- stoichiometrically
- sphygmomanometries
- spectrofluorimeter
- somnambulistically
- simultaneousnesses
- semiprofessionally
- semidomestications
- semiconservatively
- sedimentologically
- reconstructionisms
- rechromatographies
- rambunctiousnesses
- radiochromatograms
- postmillennialists
- postmillennialisms
- postmillenarianism
- photomorphogenesis
- photomicrographies
- photodecomposition
- paleoclimatologies
- overoptimistically
- overembellishments
- overcommunications
- overcommercializes
- nondiscriminations
- noncomparabilities
- noncommutativities
- neurotransmissions
- multifariousnesses
- monochromaticities
- misrepresentations
- misinterpretations
- misidentifications
- misclassifications
- misadministrations
- mineralocorticoids
- microreproductions
- microradiographies
- microphotographies
- microphotographers
- micrometeorologist
- micrometeorologies
- micromanipulations
- microlepidopterous
- microencapsulation
- microencapsulating
- microdensitometric
- microdensitometers
- microcrystallinity
- microcalorimetries
- methylprednisolone
- methemoglobinemias
- meretriciousnesses
- melodramatizations
- mechanochemistries
- maladministrations
- magnetostrictively
- magnetoresistances
- macrophotographies
- macroglobulinemias
- lymphangiographies
- lumpenproletariats
- intercolumniations
- inharmoniousnesses
- incommodiousnesses
- incommensurability
- incombustibilities
- impersonalizations
- immunosuppressions
- immunosuppressants
- immunoreactivities
- immunoprecipitates
- immunopathologists
- immunohematologist
- immunohematologies
- immunodeficiencies
- hypophysectomizing
- hyperpigmentations
- hyperimmunizations
- hyperalimentations
- hydroxytryptamines
- hydrometeorologist
- hydrometeorologies
- hydrometallurgists
- homoscedasticities
- hemoglobinopathies
- glycosaminoglycans
- ethnomusicologists
- ethnomusicological
- ethnomethodologist
- ethnomethodologies
- electroretinograms
- electromyographies
- electroluminescent
- electrochemistries
- electrocardiograms
- disintermediations
- dihydroergotamines
- diastereoisomerism
- dextroamphetamines
- denominationalisms
- demythologizations
- dematerializations
- decriminalizations
- curmudgeonlinesses
- counterculturalism
- contemptiblenesses
- constitutionalisms
- congregationalisms
- comprehensibleness
- compartmentalising
- companionabilities
- communicablenesses
- commercializations
- commensurabilities
- coccidioidomycoses
- cholecystectomized
- biotransformations
- biocompatibilities
- archaeoastronomies
- antidiscrimination
- anticommercialisms
- antiadministration
- anagrammatizations
- aerothermodynamics
- sentimentalization
- sentimentalisation
- pteridospermopsida
- pteridospermaphyta
- plasmodiophoraceae
- noncomprehensively
- muscivora-forficata
- mucopolysaccharide
- lacto-vegetarianism
- immunofluorescence
- hypoparathyroidism
- hypercholesteremia
- homobasidiomycetes
- histocompatibility
- glomerulonephritis
- coccidioidomycosis
- ballistocardiogram
- antiferromagnetism
- anti-traditionalism
- adenocarcinomatous
Phrases (586)
- woodwind instrument
- william dean howells
- washington monument
- vladimir mayakovsky
- vaccinium oxycoccus
- translating program
- tomistoma schlegeli
- thomas wright waller
- syzygium aromaticum
- syrian monetary unit
- superiority complex
- suborder myxinoidei
- solenostemon blumei
- sir mortimer wheeler
- sir martin frobisher
- short-term liability
- sergei rachmaninoff
- sense of equilibrium
- selective lipectomy
- samolus parviflorus
- rheims-douay version
- return on investment
- research colloquium
- republic of suriname
- republic of maldives
- proposal of marriage
- prince-of-wales plume
- populus tremuloides
- pooecetes gramineus
- polish monetary unit
- podilymbus podiceps
- planning commission
- physical phenomenon
- parkinson's syndrome
- p-type semiconductor
- oscar hammerstein ii
- orthotomus sutorius
- order trogoniformes
- order passeriformes
- order columbiformes
- order ciconiiformes
- one thousand million
- odocoileus hemionus
- newspaper columnist
- navigational system
- musical performance
- musical composition
- musculus temporalis
- musculospiral nerve
- moschus moschiferus
- morchella crassipes
- minor tranquilliser
- minister of religion
- methotrexate sodium
- meleagris gallopavo
- meconopsis cambrica
- material possession
- master of literature
- manganese tetroxide
- magnoliopsid family
- macrozamia communis
- logistic assessment
- lepomis macrochirus
- lachrymal secretion
- keyboard instrument
- kalmia angustifolia
- james whitcomb riley
- houses of parliament
- historical document
- herpestes ichneumon
- green mountain state
- government minister
- gossypium herbaceum
- giambattista marino
- george simon kaufman
- genus struthiomimus
- genus melopsittacus
- genus dimorphotheca
- garcinia mangostana
- family scorpaenidae
- family scolopacidae
- expressed almond oil
- essential amino acid
- endorsement in blank
- electronics company
- electron microscope
- election commission
- economic assistance
- dylan marlais thomas
- douay-rheims version
- dmitri shostakovich
- direct transmission
- diplomatic minister
- danish monetary unit
- dame sybil thorndike
- cyrus hall mccormick
- crotalus mitchellii
- conservation of mass
- compression bandage
- common american shad
- commissaire maigret
- columbia university
- cognitive semantics
- class schizomycetes
- class magnoliopsida
- christopher marlowe
- chemical operations
- charles follen mckim
- ceremonial occasion
- castanea mollissima
- capital of minnesota
- bush administration
- book of lamentations
- bombycilla garrulus
- blue ridge mountains
- astronomy satellite
- assyrian neo-aramaic
- artocarpus communis
- artemisia filifolia
- armoracia rusticana
- apodemus sylvaticus
- antispasmodic agent
- antagonistic muscle
- anamnestic reaction
- amphibious aircraft
- amlodipine besylate
- ambystoma mexicanum
- amaranthus spinosus
- allegheny mountains
- air-to-ground missile
- agropyron cristatum
- agnes george de mille
- administrative body
- adenosine deaminase
- acoustic gramophone
- winter olympic games
- wilson cloud chamber
- willie howard mays jr.
- william henry hudson
- white slime mushroom
- western roman empire
- western mountain ash
- western diamondback
- west indian smallpox
- wesleyan methodists
- webbing clothes moth
- volumetric analysis
- vespula maculifrons
- vespertilio murinus
- veronica chamaedrys
- vermillion rockfish
- vena stylomastoidea
- vascular hemophilia
- varanus komodoensis
- vaccinium scoparium
- upholstery material
- umbelliferous plant
- trogium pulsatorium
- trisodium phosphate
- trichostema lanatum
- tremella fuciformis
- transmission system
- transitive verb form
- toxic shock syndrome
- top fermenting yeast
- tobacco mosaic virus
- time deposit account
- time-and-motion study
- thomas stearns eliot
- thomas gainsborough
- thermosetting resin
- thermoplastic resin
- thermobia domestica
- thermionic emission
- thamnophis sirtalis
- thamnophis sauritus
- thamnophis proximus
- thalamostriate vein
- teucrium scorodonia
- tanacetum douglasii
- systema urogenitale
- systema digestorium
- system of numeration
- synaptomys borealis
- symplocus tinctoria
- symphoricarpos alba
- suspended animation
- supra expressionism
- supervisory program
- superfamily apoidea
- suborder ruminantia
- suborder mugiloidea
- suborder lemuroidea
- subfamily dorylinae
- subfamily acoraceae
- structural genomics
- straight-line method
- stereophonic system
- space-time continuum
- southern maidenhair
- southern hemisphere
- southern bog lemming
- sonora semiannulata
- solomon r. guggenheim
- solar magnetic field
- solanum commersonii
- solanum carolinense
- sodium thiosulphate
- sodium hypochlorite
- socio-economic class
- smoking compartment
- smilax rotundifolia
- small cell carcinoma
- sloanea jamaicensis
- sidalcea malviflora
- shorea teysmanniana
- sensorimotor region
- seminiferous tubule
- semiconductor diode
- semi-sweet chocolate
- segmentation cavity
- secobarbital sodium
- scolymus hispanicus
- scleroderma bovista
- sarah kemble siddons
- sao tome and principe
- sample distribution
- samolus floribundus
- saint thomas aquinas
- saint thomas a becket
- round-tailed muskrat
- rocky mountain sheep
- robert james fischer
- robert bruce mathias
- rhodanthe manglesii
- rhizomatous begonia
- reproductive system
- religious mysticism
- relative atomic mass
- registration number
- reductio ad absurdum
- real-time processing
- ratibida columnaris
- quadriphonic system
- quadraphonic system
- pus-forming bacteria
- public relations man
- prumnopitys elegans
- prospero lambertini
- proportional sample
- promotional expense
- president john adams
- potassium hydroxide
- potassium carbonate
- potamogeton crispus
- positive chemotaxis
- populus balsamifera
- pomatomus saltatrix
- polystichum braunii
- polypodium scouleri
- political commissar
- police commissioner
- polemonium viscosum
- pneumogastric nerve
- plumed scorpionfish
- plains lemon monarda
- pinus californiarum
- pinnotheres ostreum
- pimenta officinalis
- pierre-simon laplace
- phragmites communis
- phonological system
- petroleum geologist
- peromyscus eremicus
- peperomia sandersii
- penstemon rydbergii
- penstemon newberryi
- pembroke welsh corgi
- parochetus communis
- oxytropis lambertii
- oreamnos americanus
- order temnospondyli
- order polymastigina
- order plumbaginales
- order mycrosporidia
- order marchantiales
- order haemosporidia
- order falconiformes
- order cypriniformes
- order coraciiformes
- order colymbiformes
- opisthocomus hoazin
- operating statement
- omphalotus illudens
- northern hemisphere
- normative economics
- normal distribution
- nicolas malebranche
- newtonian mechanics
- newton's law of motion
- nemophila menziesii
- negative chemotaxis
- n-type semiconductor
- myosotis scorpiodes
- myositis trichinosa
- myasthenic syndrome
- musculus teres minor
- musculus pectoralis
- musculus deltoideus
- musculus buccinator
- musculophrenic vein
- multiplication sign
- multiple regression
- mountain watercress
- mountain spleenwort
- mountain fetterbush
- mountain blacksnake
- mother-in-law's tongue
- montia lamprosperma
- momordica balsamina
- molecular biologist
- missouri compromise
- minor diatonic scale
- minoan civilisation
- mineral association
- minato ohashi bridge
- military commission
- military censorship
- mikhail baryshnikov
- microscopic anatomy
- microprocessor chip
- michael stuart brown
- michael gerald tyson
- mexican pocket mouse
- metaphosphoric acid
- metabolic alkalosis
- merovingian dynasty
- meriones longifrons
- menominee whitefish
- melospiza georgiana
- melissa officinalis
- melicocca bijugatus
- medical institution
- meadow jumping mouse
- mathematical symbol
- master of ceremonies
- mason and dixon's line
- marta brigit nilsson
- marsilea drummondii
- marriage counseling
- marquis de condorcet
- marble bones disease
- mammillaria plumosa
- malathion poisoning
- malacosoma disstria
- major tranquilliser
- major diatonic scale
- magneto-optical disc
- magnesium hydroxide
- magnesium carbonate
- macrozamia spiralis
- macroscopic anatomy
- machine translation
- lysiloma bahamensis
- lycopodium obscurum
- loxostege similalis
- long-term investment
- limnodromus griseus
- limnocryptes minima
- liliid monocot genus
- ligustrum japonicum
- libyan islamic group
- leycesteria formosa
- lepidochelys kempii
- late-spring-blooming
- kolkwitzia amabilis
- kingdom protoctista
- kingdom of swaziland
- kammon strait bridge
- judgment in personam
- joseph paul dimaggio
- jessica lucy mitford
- jerusalem artichoke
- jean francois millet
- jatropha stimulosus
- jasminum officinale
- jasminum nudiflorum
- james francis thorpe
- james butler hickock
- jamaica honeysuckle
- jacques lucien monod
- isopyrum biternatum
- ipomoea orizabensis
- internal combustion
- intermediate shroud
- insider information
- inorganic chemistry
- informer's privilege
- information science
- information measure
- hypoplastic anaemia
- housing development
- homo sapiens sapiens
- hindu kush mountains
- hibiscus moscheutos
- hesperis matronalis
- hedeoma pulegioides
- haemorrhagic stroke
- haematobia irritans
- gyromitra esculenta
- gymnadenia conopsea
- guadalupe mountains
- grievous bodily harm
- greenhouse emission
- green monkey disease
- government security
- girolamo savonarola
- giambattista bodoni
- giacomo della chiesa
- geothermal industry
- genyonemus lineatus
- genus trichodesmium
- genus strobilomyces
- genus stephanomeria
- genus septobasidium
- genus scolopendrium
- genus schizophragma
- genus pithecolobium
- genus paphiopedilum
- genus mycobacterium
- genus micropogonias
- genus microdipodops
- genus lepidothamnus
- genus lagerstroemia
- genus ibero-mesornis
- genus hyracotherium
- genus halimodendron
- genus gymnocalycium
- genus gomphotherium
- genus ginglymostoma
- genus falcatifolium
- genus cnemidophorus
- genus clethrionomys
- genus chilomycterus
- genus chilomeniscus
- genus ceratotherium
- genus cardiospermum
- genus calamagrostis
- genus argyroxiphium
- genus agrobacterium
- genus acanthocybium
- gastrocolic omentum
- functional genomics
- fumaria officinalis
- frontier settlement
- francois mitterrand
- florida smoothhound
- first earl of chatham
- first baron macaulay
- female circumcision
- family xenosauridae
- family synodontidae
- family symplocaceae
- family stromateidae
- family rhiptoglossa
- family relationship
- family plasmodiidae
- family orchestiidae
- family nephropsidae
- family musophagidae
- family gobiesocidae
- family ceratopsidae
- family catostomidae
- family aulostomidae
- family ambrosiaceae
- fairness commission
- eusebius hieronymus
- euonymus americanus
- euclid's second axiom
- euclid's fourth axiom
- euarctos americanus
- esther hobart morris
- epistle to the romans
- endowment insurance
- electron microscopy
- ecclesiastical mode
- eastern roman empire
- eastern catholicism
- dynamic loudspeaker
- dwarf russian almond
- dryopteris filix-mas
- domesticated animal
- doctor of humanities
- division myxomycota
- district of columbia
- dicamptodon ensatus
- desmodium tortuosum
- desmodium purpureum
- davidson's penstemon
- cytisus multiflorus
- cystopteris montana
- cynoglossum amabile
- cryptotermes brevis
- cryptogramma crispa
- criminal possession
- court of saint james's
- cotoneaster dammeri
- corrosive sublimate
- corporal punishment
- coronary thrombosis
- convallaria majalis
- consumer price index
- confederate jasmine
- computer simulation
- compound microscope
- complex preposition
- competitor analysis
- compatible software
- compassionate leave
- communist manifesto
- common lady's-slipper
- coeloglossum viride
- cnemidophorus velox
- clematis versicolor
- clematis ochreleuca
- claudius ptolemaeus
- classical mythology
- cirsium lanceolatum
- cirsium helenioides
- cimicifuga racemosa
- choloepus hoffmanni
- chinese forget-me-not
- charles william post
- chamaemelum nobilis
- cerebral thrombosis
- ceratotherium simum
- ceratostomella ulmi
- castilleja chromosa
- cardamine douglasii
- capital of san marino
- camelus dromedarius
- camassia scilloides
- calostoma ravenelii
- california sycamore
- bursera microphylla
- burhinus oedicnemus
- bubalus mindorensis
- bronchoscopic smear
- boy scouts of america
- binge-vomit syndrome
- binge-purge syndrome
- bidens trichosperma
- bernese mountain dog
- basal metabolic rate
- bartolomeo eustachi
- barometric pressure
- barbados maidenhair
- barack hussein obama
- automobile industry
- autoimmune disorder
- autoimmune diabetes
- astroloma humifusum
- asterid dicot family
- asian tiger mosquito
- articulatory system
- arteria ethmoidalis
- arteria communicans
- artemisia abrotanum
- army of the righteous
- aristarchus of samos
- arisaema dracontium
- arisaema atrorubens
- anterograde amnesia
- angoumois grain moth
- anarchist communism
- anamnestic response
- alsophila pometaria
- almond-leaves willow
- allium ampeloprasum
- aleurites moluccana
- alan mathison turing
- admiralty mountains
- acoustic phenomenon
- acentric chromosome
- acellular slime mold
- absorption spectrum
