13 letters
- monstrosities17
- multihospital24
- myelofibroses25
- myelofibrosis25
- neurosciences22
- neurosurgeons19
- neurosurgical22
- noncellulosic25
- nondeposition20
- nondisclosure21
- nonexplosives30
- nonhomosexual29
- nonphosphates25
- nonpossession19
- nosologically24
- nostalgically24
- octosyllabics26
- octosyllables24
- odontoglossum22
- operosenesses17
- oppositionist20
- oscillational20
- oscillographs25
- oscillography27
- oscilloscopes24
- oscilloscopic27
- ossifications20
- osteomalacias20
- osteomyelitis19
- osteoplasties17
- osteosarcomas19
- overexposures28
- ovipositional22
- periostitises16
- phagocytosing28
- pharmacognosy29
- philosophical28
- philosophised25
- philosophises24
- philosophized34
- philosophizer33
- philosophizes33
- phosphatidyls27
- phosphatizing35
- phosphaturias24
- phosphokinase28
- phospholipase27
- phospholipids28
- phosphoresced27
- phosphoresces26
- phosphorylase26
- phosphorylate26
- photocomposed28
- photocomposer27
- photocomposes27
- photopositive25
- photostatting21
- photosynthate23
- physostigmine26
- polyribosomal26
- polyribosomes25
- possessedness18
- possibilities20
- postbourgeois22
- postclassical24
- postcranially24
- postdebutante22
- postdiluvians24
- postdoctorate20
- postembryonal26
- postembryonic28
- postemergence25
- postemergency27
- postepileptic26
- postfractures23
- postgraduates20
- postholocaust23
- postinaugural22
- postinfection24
- postinjection30
- postisolation18
- postlapsarian21
- postmodernism24
- postmodernist21
- postoperative23
- postponements24
- postpositions20
- postpubescent27
- postrecession20
- postsecondary23
- posttensioned19
- posttraumatic23
- posttreatment20
- postulational20
- postvasectomy28
- prepositional21
- prepositively26
- prepossessing22
- prepossession20
- proboscideans24
- proboscidians24
- prognosticate22
- propositional21
- propositioned21
- proscriptions23
- prosecutorial21
- proselytising22
- proselytizers28
- proselytizing31
- prosencephala26
- prosopography28
- prosopopoeias22
- prospectively29
- prostacyclins26
- prostaglandin22
- prostatectomy24
- prostatitises16
- prostitutions18
- pseudoscience25
- psychosomatic29
- psychosurgeon27
- psychosurgery28
- pteridosperms23
- purposelessly24
- purposiveness25
- pyrophosphate28
- quattrocentos27
- recomposition23
- redisposition18
- rehospitalize28
- reimpositions20
- religiosities16
- reposefulness22
- repositioning20
- repossessions17
- retinoscopies20
- retrospecting22
- retrospection20
- retrospective23
- rhodochrosite21
- risorgimentos19
- sacrosanctity22
- salmonelloses20
- salmonellosis20
- schistosities18
- serodiagnoses17
- serodiagnosis17
- sigmoidoscopy27
- siphonosteles20
- snollygosters20
- somatosensory19
- somatostatins17
- spectroscopes25
- spectroscopic28
- spirochetoses21
- spirochetosis21
- stegosauruses17
- stereoscopies19
- sternforemost20
- stratospheres18
- stratospheric21
- strenuosities15
- supercolossal22
- superimposing26
- superposition21
- supervirtuosi22
- supervirtuoso22
- suppositional22
- suppositories20
- synchroscopes27
- tachistoscope24
- teleutospores18
- tenosynovitis21
- testosterones14
- thermosetting21
- thermospheres23
- thermospheric26
- thermostating21
- thermostatted19
- toxoplasmoses27
- toxoplasmosis27
- transposition18
- triphosphates23
- tyrannosaurus19
- underexposing29
- underexposure27
- undiagnosable23
- urediniospore19
- urethroscopes22
- verbosenesses21
- viscosimeters23
- viscosimetric26
- xenodiagnoses25
- xenodiagnosis25
- zoosporangium32