10 letters
- ophthalmia21
- mythologic23
- pathologic21
- petroglyph23
- petrologic19
- phagocytic25
- phlegmatic24
- phlogopite21
- photograph22
- pictograph23
- tomography22
- topography22
- trichology20
- nympholept25
- patronymic22
- periphyton21
- phenotypic24
- pheromonal20
- phonematic22
- polyphonic25
- pratincole18
- propionate17
- protonemal18
- relocation15
- taphonomic22
- theophanic21
- trampoline18
- percolator17
- procaryote18
- proclaimer20
- procryptic24
- proctorial17
- pyrometric21
- pyrophoric23
- reciprocal20
- replicator17
- rhetorical16
- ochlocrats19
- octarchies18
- oppositely19
- orthoclase16
- osmolarity16
- perilymphs24
- philosophe21
- philosophy23
- phosphatic23
- phosphoric23
- phosphoryl23
- photophase20
- photoplays21
- pitchpoles22
- polyhistor18
- polymorphs24
- polyparies19
- polyphasic24
- polytheism21
- prostomial17
- protoplasm20
- psilophyte21
- psychopath25
- saprophyte20
- schoolmate19
- schooltime19
- scratchily21
- sociometry18
- sociopathy20
- splotchier19
- sporophyte20
- thimerosal16
- prevocalic24
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v -