12 letters
- heterosexual23
- homosexually29
- homozygosity32
- hospitalised19
- hospitalises18
- hospitalized28
- hospitalizes27
- hydrospheres22
- hydrospheric25
- hydrostatics20
- hyoscyamines25
- hyperostoses19
- hyperostosis19
- hyperostotic22
- hypoglossals23
- hypostatized29
- hypostatizes28
- ichthyosaurs22
- icosahedrons19
- idiosyncrasy21
- inappositely22
- inhospitable22
- inhospitably24
- inosculating21
- inosculation19
- intercostals17
- intercrossed17
- intercrosses16
- internuncios19
- introspected20
- jocosenesses25
- kaleidoscope24
- ketosteroids17
- kinetoscopes23
- lachrymosely26
- lachrymosity25
- laparoscopes22
- laparoscopic25
- laryngoscope24
- laryngoscopy26
- leprosariums20
- leukocytoses23
- leukocytosis23
- liposuctions21
- lithospheres20
- lithospheric23
- loosestrifes16
- luminosities18
- mackintoshes25
- macrocytoses23
- macrocytosis23
- macrofossils22
- malpositions20
- metamorphose23
- meticulosity22
- microfossils22
- microscopies24
- microscopist24
- microseconds23
- microseismic24
- microspheres23
- microsporous22
- microsurgery23
- misdiagnosed20
- misdiagnoses19
- misdiagnosis19
- mispositions19
- monospecific28
- monosyllabic26
- monosyllable24
- monosynaptic25
- morosenesses16
- multipurpose24
- myoinositols19
- nebulosities18
- neostigmines19
- nephrostomes21
- neuroscience21
- neurosensory17
- neurosurgeon18
- neurosurgery19
- nimbostratus20
- nitrosamines17
- noncomposers23
- noncorrosive21
- noncrossover21
- nonexplosive29
- nonhospitals20
- nonphosphate24
- nonpurposive25
- northernmost19
- octosyllabic25
- octosyllable23
- opposability24
- oppositeness19
- oppositional20
- oscillations18
- oscillograms22
- oscillograph24
- oscilloscope23
- osmolalities17
- osmolarities16
- ossification19
- ostentations14
- ostentatious14
- osteoblastic19
- osteoclastic19
- osteogeneses15
- osteogenesis15
- osteological19
- osteologists15
- osteomalacia19
- osteopathies17
- osteoplastic19
- osteoporoses15
- osteoporosis15
- osteoporotic18
- osteosarcoma18
- ostracoderms19
- otiosenesses13
- otoscleroses16
- otosclerosis16
- overexposing29
- overexposure27
- ovipositions20
- ozonospheres27
- paternosters16
- phagocytosed25
- phagocytoses24
- phagocytosis24
- philosophers23
- philosophies23
- philosophise23
- philosophize32
- phosphatases22
- phosphatides23
- phosphatidic26
- phosphatidyl26
- phosphatized32
- phosphatizes31
- phosphaturia23
- phospholipid27
- phosphoniums27
- phosphoresce25
- phosphorites22
- phosphoritic25
- phosphoruses23
- photocompose26
- photomosaics23
- photosetters17
- photosetting20
- photospheres22
- photospheric25
- photostating20
- photostatted18
- photosystems22
- phytosterols20
- pittosporums22
- polyhedroses21
- polyhedrosis21
- polyribosome24
- positionally20
- positiveness20
- positivistic22
- positivities19
- positroniums20
- possessional17
- possessively22
- postabortion19
- postaccident23
- postbiblical26
- postcardlike24
- postcolleges22
- postcolonial21
- postconquest29
- postcoronary21
- postdeadline19
- postdelivery23
- postdiluvian23
- postdoctoral20
- posteditings19
- postelection20
- posteriority17
- posteruptive23
- postexercise25
- postexposure26
- postfeminist22
- postfracture22
- postgraduate19
- posthospital21
- posthumously25
- posthypnotic26
- postimperial22
- postischemic26
- postliterate16
- postmedieval24
- postmidnight24
- postmistress18
- postneonatal18
- postorgasmic23