12 letters
- heterogonies17
- heterografts19
- heterologous18
- hieroglyphic27
- histogeneses17
- histogenesis17
- histogenetic20
- histological21
- histologists17
- holographers22
- holographies22
- holographing25
- homogenising23
- homogenizers29
- homogenizing32
- homologating23
- homologation21
- homologizers29
- homologizing32
- hornswoggled24
- hornswoggles23
- hydrobiology25
- hydrogenases20
- hydrogenated21
- hydrogenates20
- hydrographer24
- hydrographic27
- hydrological24
- hydrologists20
- hypoglossals23
- hypoglycemia30
- hypoglycemic33
- iconographer23
- iconographic26
- iconological23
- ideographies20
- ideologizing28
- illogicality22
- immunologies23
- immunologist23
- incognizance32
- interrogated16
- interrogatee15
- interrogates15
- interrogator15
- iridologists16
- karyological25
- kremlinology26
- kymographies28
- leapfrogging26
- leukemogenic27
- lexicography32
- lexicologies26
- lexicologist26
- limnological24
- limnologists20
- lithographed23
- lithographer22
- lithographic25
- lithological22
- liturgiology21
- loganberries19
- logicalities19
- logistically22
- logisticians19
- lognormality22
- lymphography32
- lysogenicity23
- lysogenising21
- lysogenizing30
- macrogametes23
- magnetograph25
- malacologies22
- malacologist22
- mammalogists24
- mammographic31
- meteorologic21
- metrological22
- metrologists18
- microbiology26
- microgametes23
- micrographed26
- micrographic28
- microgravity26
- microgrooves24
- microprogram26
- mimeographed26
- mineralogies19
- mineralogist19
- miscataloged22
- misogynistic23
- misprogramed24
- missiologies18
- mitogenicity23
- monogamously25
- monogrammers24
- monogramming27
- monographing26
- monologuists20
- morphologies23
- morphologist23
- museological23
- museologists19
- musicologies22
- musicologist22
- mythographer26
- mythological26
- mythologists22
- mythologized32
- mythologizer31
- mythologizes31
- necrological23
- necrologists19
- nematologies19
- nematologist19
- nephrologies21
- nephrologist21
- neurobiology22
- neurological21
- neurologists17
- nitrogenases16
- nomographies23
- nonbiologist20
- noncognitive24
- numerologies20
- numerologist20
- oceanography25
- oceanologies19
- oceanologist19
- octogenarian19
- oncogenicity24
- organologies18
- orismologies18
- ornithologic21
- orographical23
- orthogeneses17
- orthogenesis17
- orthogenetic20
- orthogonally21
- orthographic24
- oscillograms22
- oscillograph24
- osteogeneses15
- osteogenesis15
- osteological19
- osteologists15
- overprograms24
- paedogeneses19
- paedogenesis19
- paedogenetic22
- paleobiology24
- paleoecology24
- paleographer23
- paleographic26
- paleontology22
- paleozoology30
- palynologies22
- palynologist22
- pantographic26
- papyrologies23
- papyrologist23
- parasitology20
- pathobiology25
- pathogeneses20
- pathogenesis20
- pathogenetic23
- pathological24
- pathologists20
- petrogeneses18
- petrogenesis18
- petrogenetic21
- petrographer22
- petrographic25
- petrological22
- petrologists18
- pettifoggers22
- pettifoggery24
- pettifogging25
- pharmacology28
- phenological25
- philological25
- philologists21
- phlebography30
- phlebologies24
- phonogrammic29
- phonographer25
- phonographic28
- phonological25
- phonologists21
- photobiology25
- photogeology24
- photographed25
- photographer24
- photographic27
- photogravure24
- phrenologies21
- phrenologist21
- phycological29
- phycologists25
- phylogenetic26