14 letters
- nonrecognition23
- nontheological25
- oceanographers25
- oceanographies25
- odontoglossums23
- oncogenicities24
- onomatologists21
- ophthalmologic31
- ornithological24
- ornithologists20
- orthogonalized30
- orthogonalizes29
- orthographical27
- oscillographic29
- otolaryngology25
- overhomogenize35
- overprograming29
- overprogrammed30
- oxyhemoglobins35
- paleobiologies24
- paleobiologist24
- paleoecologies24
- paleoecologist24
- paleogeography29
- paleographical29
- paleontologies22
- paleontologist22
- paleopathology28
- paleozoologies30
- paleozoologist30
- parallelograms25
- parapsychology32
- parasitologies20
- parasitologist20
- pathobiologies25
- pathologically29
- peptidoglycans30
- periodontology24
- petrographical28
- petrologically27
- pettifoggeries24
- pharmacologies28
- pharmacologist28
- phenologically30
- philologically30
- phlebographies30
- phonologically30
- photobiologies25
- photobiologist25
- photogenically29
- photogeologies24
- photogeologist24
- photogrammetry29
- phraseological26
- phraseologists22
- physiognomical31
- physiographers28
- physiographies28
- phytogeography32
- phytopathogens29
- phytopathology31
- phytosociology29
- planetological26
- planetologists22
- plethysmograms30
- plethysmograph32
- pneumatologies25
- polarographies25
- precipitinogen27
- preprogramming31
- primatological27
- primatologists23
- primogenitures24
- progestational21
- prognosticated24
- prognosticates23
- prognosticator23
- progressivisms26
- progressivists23
- protozoologies29
- protozoologist29
- psychobiologic33
- psychologising30
- psychologizing39
- pteridological25
- pteridologists21
- pyrogenicities25
- radioautograph23
- radiobiologies21
- radiobiologist21
- radioecologies21
- radiologically25
- rechoreographs26
- remythologized34
- remythologizes33
- rephotographed27
- reprogrammable29
- retrogradation18
- retrogressions17
- rheumatologies23
- rheumatologist23
- roentgenograms23
- roentgenologic24
- sedimentologic25
- seismographers24
- seismographies24
- semasiological24
- semiologically27
- sociobiologies23
- sociobiologist23
- sociologically27
- soteriological21
- spectrographic30
- spermatogonial24
- spermatogonium27
- spermiogeneses23
- spermiogenesis23
- stereographies21
- stereographing24
- supererogation21
- supererogatory22
- symptomatology30
- tautologically25
- technologizing35
- teleologically25
- teratogenicity22
- terminological25
- thanatological24
- thanatologists20
- thermographies26
- thyroglobulins27
- togethernesses19
- transmogrified24
- transmogrifies23
- tropologically27
- turbogenerator21
- ultimogeniture23
- undogmatically29
- unprogrammable31
- unrecognizable35
- unrecognizably37
- vexillological34
- vexillologists30
- victimologists27
- vitellogeneses23
- vitellogenesis23
- volcanological30
- volcanologists26
- vulcanologists27
- zoogeographers32
- zoogeographies32