13 letters
- physicalities24
- physiographic30
- physiological27
- phytochemical32
- phytotoxicity32
- pianistically24
- pickerelweeds28
- pictographies26
- pictorialisms23
- pictorialists20
- pictorialized30
- pictorializes29
- pictorialness21
- picturephones26
- picturesquely33
- picturization30
- pietistically23
- piezoelectric32
- piscicultures25
- pneumatically28
- pneumatolytic27
- pointillistic22
- polarographic27
- policyholders26
- politicalized31
- politicalizes30
- polychromatic30
- polycistronic26
- polyembryonic31
- pontificating26
- pontification24
- pontificators23
- postclassical24
- postembryonic28
- postepileptic26
- posttraumatic23
- practicalness24
- pragmatically28
- pragmaticisms27
- pragmaticists24
- praxeological30
- preanesthetic22
- prebiological26
- preconviction28
- predicatively27
- prefabricated26
- prefabricates25
- preganglionic26
- prehistorical22
- prejudicially34
- prescientific26
- prevaricating26
- prevarication24
- prevaricators23
- pricklinesses25
- primitivistic26
- prismatically26
- probabilistic26
- problematical27
- proctological26
- proficiencies26
- progestogenic24
- prognosticate22
- proleptically27
- prolificacies26
- prolificities23
- propaedeutics24
- prophetically28
- prophylactics30
- protohistoric21
- proventriculi26
- psephological28
- pseudoclassic25
- pseudomorphic29
- psychasthenic29
- psychodynamic33
- psychogenetic29
- psychokinetic31
- psychological30
- psychometrics29
- psychopathics31
- psychophysics33
- psychosomatic29
- psychotically30
- psychotropics29
- psychrometric29
- psychrophilic32
- pumpernickels32
- purifications24
- puritanically25
- pyrolytically28
- pyrotechnical28
- quadraphonics33
- quadratically31
- quadriphonics33
- quadriplegics33
- quadruplicate32
- quadruplicity34
- qualification31
- quasicrystals29
- quasiparticle30
- quasiperiodic30
- quintuplicate32
- radicalnesses19
- radiobiologic23
- radiochemical26
- radioisotopic20
- ramifications23
- ratifications20
- rationalistic18
- realistically21
- reapplication24
- rearticulated19
- rearticulates18
- reconvictions25
- rectification23
- rededications19
- redistricting20
- reduplicating25
- reduplication23
- reduplicative26
- regionalistic20
- reindictments22
- relubricating24
- relubrication22
- replicability26
- reprographics26
- republicanism28
- republicanize34
- republication25
- respirometric22
- restrictively23
- reticulations19
- reticulocytes23
- retrodictions18
- reunification22
- revictualling26
- rhapsodically26
- rheologically25
- rheumatically26
- rhythmicities25
- romanticising23
- romanticizing32
- rubicundities23
- sacrificially26
- saprogenicity24
- sarcastically23
- scarification23
- schematically28
- schizophrenic36
- scholasticate22
- scholasticism25
- scintigraphic27
- seasicknesses21
- seismographic26
- seismological23
- selenocentric22
- selenological22
- semiautomatic23
- semicivilized34
- semiclassical24
- semiconductor25
- semiconscious24
- semiempirical26
- semiparasitic22
- semipolitical24
- semisynthetic24
- semitonically24
- sensitometric20
- sericulturist19
- serologically23
- sextuplicated29
- sextuplicates28
- sickishnesses23
- significances26
- significantly26
- signification23
- significative26
- silvicultural25
- silvicultures24
- socioeconomic26
- solicitations18
- solicitorship22
- somatological23
- sophistically25
- sophisticated22
- sophisticates21
- spasmodically27
- specification26
- specificities25
- spectrometric25
- spectroscopic28
- speleological24
- spermatogenic25
- splenetically25
- statistically20
- statisticians17
- stereographic23
- stereological20
- stereopticons20