10 letters
- radiologic17
- radiometer14
- radiometry16
- radiophone17
- radiophoto16
- readopting17
- recharting18
- reciprocal20
- reclothing19
- recoloring17
- recompiled21
- rectorship18
- reimported17
- relocating17
- relocation15
- rematching21
- repatching21
- replicated18
- replicator17
- reproached19
- repudiator15
- retailored12
- rheologist15
- rhetorical16
- rheumatoid17
- rhodolites14
- rhomboidal20
- rhythmical23
- rigamarole16
- rigmaroles16
- schoolmate19
- schooltime19
- sophomoric21
- spheroidal17
- splotchier19
- taphonomic22
- tetrachord16
- tetraploid15
- theologian16
- theophanic21
- thermogram20
- thermopile19
- theurgical19
- thimerosal16
- thorougher17
- threadworm19
- tocologies16
- tocopherol19
- tomography22
- toolholder15
- topologies16
- torchlight20
- torpedoing17
- tracheolar16
- trampoline18
- trichology20
- trichromat18
- tricolored15
- trigraphic20
- trihedrals14
- trimorphic21
- trochlears16
- trochoidal17
- tropologic19
- ultramicro18
- watercolor17
- withholder19
- zoomorphic30