13 letters
- transcriptase20
- transcription21
- transcultural21
- transductants20
- transductions20
- transfections21
- transferences21
- transferrable21
- transfiguring23
- transformable24
- transfusional20
- transgendered19
- transgressing19
- transgression17
- transgressive20
- transgressors16
- transhumances24
- transistorise14
- transistorize23
- translational17
- transliterate15
- translocating21
- translocation19
- translucences23
- translucently23
- transmembrane24
- transmigrated20
- transmigrates19
- transmigrator19
- transmissible21
- transmissions18
- transmittable21
- transmittance21
- transmountain20
- transmutation19
- transmutative22
- transnational17
- transparences21
- transparently21
- transpersonal19
- transpiercing23
- transpiration18
- transplanters19
- transplanting22
- transportable21
- transposition18
- transshipment23
- transshipping25
- transthoracic22
- transudations17
- transvaluated21
- transvaluates20
- transvestisms21
- transvestites18
- trapezohedron29
- trapshootings21
- traumatically24
- treacherously22
- treasurership19
- tredecillions20
- tremulousness20
- trephinations20
- triamcinolone22
- triangularity20
- triangulating21
- triangulation19
- triaxialities21
- triboelectric23
- tricarboxylic32
- triceratopses19
- trichlorphons25
- trichologists21
- trichopterans22
- trichothecene24
- trichromatism24
- tricksinesses21
- trifurcations21
- triggerfishes22
- triglycerides22
- trigonometric22
- triliteralism18
- trimethoprims24
- trinucleotide20
- triphosphates23
- triplications21
- triploblastic24
- trisaccharide22
- trisoctahedra19
- tritheistical19
- triumphalisms26
- triumphalists23
- trolleybusses21
- trophoblastic25
- tropicalizing32
- tropocollagen24
- trothplighted24
- troublemakers25
- troublemaking28
- troubleshoots20
- troublesomely24
- troublousness20
- trustworthily22
- tsutsugamushi23
- tubocurarines22
- tumorigeneses20
- tumorigenesis20
- tunablenesses20
- tunefulnesses21
- turbellarians20
- turbidimeters21
- turbidimetric24
- turbochargers24
- turboelectric24
- typefoundings27
- typicalnesses23
- typifications25
- typographical29
- typologically28
- tyrannosaurus19