19 letters
18 letters
16 letters
15 letters
14 letters
13 letters
12 letters
- anthropology23
- astrobiology20
- bacteriology23
- dialectology22
- ecclesiology24
- epidemiology24
- epiphytology27
- epistemology23
- geohydrology24
- hydrobiology25
- kremlinology26
- liturgiology21
- microbiology26
- neurobiology22
- paleobiology24
- paleoecology24
- paleontology22
- paleozoology30
- parasitology20
- pathobiology25
- pharmacology28
- photobiology25
- photogeology24
- pneumatology25
- protozoology29
- radiobiology21
- radioecology21
- rheumatology23
- sociobiology23
11 letters
- aerobiology19
- amphibology27
- archaeology21
- campanology26
- climatology23
- cosmetology22
- criminology23
- cryobiology24
- dactylology23
- dermatology20
- electrology20
- eschatology21
- gerontology19
- gynaecology24
- herpetology21
- ichthyology25
- kinesiology21
- laryngology22
- lichenology23
- malariology20
- martyrology21
- meteorology19
- methodology22
- myrmecology27
- narratology17
- neonatology18
- onomatology20
- ornithology19
- phraseology21
- planetology21
- primatology22
- pteridology20
- reflexology27
- semasiology19
- soteriology16
- terminology20
- thanatology19
- vexillology29
- victimology26
- volcanology25
- vulcanology26
10 letters
- angelology19
- archeology20
- autecology19
- balneology20
- bibliology22
- cardiology19
- chronology21
- codicology22
- cohomology23
- conchology24
- craniology19
- cryptology23
- demonology20
- dendrology18
- deontology17
- embryology23
- entomology19
- enzymology30
- escapology21
- exobiology25
- futurology20
- glaciology21
- graphology22
- gynecology23
- hematology20
- immunology23
- lexicology26
- malacology22
- missiology18
- morphology23
- musicology22
- nematology19
- nephrology21
- numerology20
- oceanology19
- organology18
- orismology18
- palynology22
- papyrology23
- phlebology24
- phrenology21
- physiology22
- praxeology25
- proctology21
- psephology23
- psychology25
- seismology18
- selenology17
- semeiology18
- somatology18
- speleology19
- stereology15
- synecology21
- technology21
- teratology15
- toxicology25
- trichology20
- urbanology20
9 letters
- aetiology14
- anthology17
- astrology14
- audiology16
- cosmology20
- ethnology17
- etymology19
- gemmology22
- hagiology18
- haplology20
- histology16
- hydrology19
- hymnology22
- iconology18
- iridology15
- karyology20
- limnology19
- lithology17
- metrology17
- museology18
- mythology21
- necrology18
- neurology16
- osteology14
- pathology19
- petrology17
- phenology20
- philology20
- phonology20
- phycology24
- radiology15
- scatology17
- semiology17
- sociology17
- symbology22
- tautology15
- teleology15
- tribology17
8 letters
- aerology13
- agrology15
- algology16
- apiology16
- areology13
- axiology20
- bryology18
- cetology16
- cytology18
- doxology21
- ethology15
- etiology13
- fetology16
- gemology18
- homology18
- horology15
- ideology14
- menology17
- misology16
- mixology23
- monology17
- mycology21
- nomology17
- nosology14
- oecology16
- oenology14
- oinology14
- oncology17
- ontology14
- pedology17
- penology17
- pomology19
- posology16
- pyrology18
- rheology15
- serology13
- sexology20
- sinology14
- sitology13
- theology15
- tocology16
- tokology17
- topology16
- typology18
- virology17
- zymology27
7 letters
6 letters
5 letters