17 letters
- intercolumniation28
- intercommunicated33
- intercommunicates32
- interdepartmental27
- intergovernmental30
- internationalisms24
- interstimulations24
- introspectionisms28
- irreformabilities27
- latitudinarianism25
- lumpenproletariat30
- lymphadenopathies35
- lymphangiographic41
- lymphogranulomata36
- macroevolutionary32
- macroglobulinemia35
- macroglobulinemic38
- macroinstructions29
- magnanimousnesses29
- magnetoresistance27
- magnetostrictions27
- maintainabilities26
- maladministration27
- malapportionments32
- maneuverabilities30
- marriageabilities26
- materialistically28
- meaninglessnesses26
- mechanoreceptions33
- medulloblastomata31
- mellifluousnesses29
- melodramatization35
- merchantabilities30
- meritoriousnesses22
- mesembryanthemums38
- metapsychological37
- methemoglobinemia35
- methylnaphthalene35
- microbiologically36
- microcalorimeters30
- microcalorimetric33
- microcirculations32
- microdensitometer28
- microdensitometry30
- microencapsulated33
- microencapsulates32
- microenvironments33
- microevolutionary32
- microinstructions29
- micromanipulation33
- micromanipulators32
- microminiaturized38
- micromorphologies34
- micropaleontology33
- microphotographer35
- microphotographic38
- microphotometries31
- microprogrammings37
- microradiographic34
- microreproduction32
- microseismicities29
- microsporogeneses29
- microsporogenesis29
- microvasculatures33
- mineralocorticoid29
- misadministration26
- misappropriations30
- miscellaneousness28
- mischaracterizing40
- mischievousnesses31
- misclassification31
- miscommunications35
- miscomprehensions33
- misidentification29
- misinterpretation25
- mispronunciations30
- misrepresentation25
- misrepresentative28
- mistranscriptions28
- mistrustfulnesses27
- misunderstandings28
- monochromatically36
- monospecificities33
- monosyllabicities31
- morphogenetically35
- mountainousnesses25
- multibillionaires28
- multiculturalisms32
- multidisciplinary33
- multigenerational27
- multimillionaires28
- multiprogrammings36
- multitudinousness27
- municipalizations39
- necessitarianisms25
- nephelometrically34
- neurofibromatoses28
- neurofibromatosis28
- neuropharmacology35
- neurotransmission24
- neurotransmitters23
- noncommunications34
- noncomprehensions32
- noncontemporaries29
- nondenominational27
- nondiscrimination28
- nondiscriminatory29
- nonentertainments25
- nonestablishments29
- nonflammabilities33
- nonmanufacturings34
- nonmathematicians31
- nonreappointments30
- nonsuperimposable33
- onomatopoetically31
- openmouthednesses29
- overambitiousness29
- overcommercialize43
- overcommunicating38
- overcommunication36
- overcompensations32
- overembellishment35
- overfamiliarities28
- paleomagnetically34
- pancreatectomized40
- paraformaldehydes33
- parameterizations33
- parathyroidectomy33
- permissiblenesses28
- pharmacognostical35
- pharmacologically38
- pharmacotherapies33
- phenylethylamines35
- pheochromocytomas38
- photocompositions32
- photogrammetrists30
- photomechanically38
- photomicrographic38
- photopolarimeters29
- physicochemically42
- plethysmographies35
- polymorphonuclear37
- postmillennialism31
- postmillennialist28
- predestinarianism26
- predeterminations26
- premillenarianism30
- premillennialisms31
- premillennialists28
- programmabilities32
- promiscuousnesses29
- pseudoclassicisms32
- pseudoparenchymas36
- psychodynamically41
- psychosomatically37
- pyrometallurgical34
- quarrelsomenesses32
- radiochromatogram31
- radioimmunoassays28
- rechromatographed33
- reconstructionism29
- rememberabilities30
- remilitarizations31
- remorselessnesses22
- retransformations25
- rhabdomyosarcomas34
- rudimentarinesses24
- rumbustiousnesses27
- sanctimoniousness27
- scandalmongerings32
- semiautomatically31
- semiconsciousness29
- semidocumentaries29
- semidomestication28
- semipornographies31
- semiprofessionals28
- socioeconomically34
- spectroheliograms31
- spectrophotometer31
- spectrophotometry33
- sphygmomanometers36
- stereochemistries25
- stereomicroscopes29
- stereomicroscopic32
- superconglomerate31
- supermillionaires27
- superminicomputer35
- superromanticisms31
- supranationalisms27
- symmetricalnesses30
- symptomatological35
- telecommunication33
- temerariousnesses22
- tempestuousnesses26
- temporomandibular33
- teratocarcinomata27
- thermochemistries30
- thermodynamically36
- thermodynamicists32
- thermoelectricity31