- Transverse processes
- Transverse sinus
- Transverse tarsal joint
- Transverse temporal gyrus
- Transverse vaginal septum
- Transversions
- Transversus abdominis
- Transversus abdominis muscle
- Transversus thoracis
- Transversus thoracis muscle
- Transvestic fetishism
- Tranylcypromine
- Trapezium
- Trapezium bone
- Trapezius
- Trapezius muscle
- Trapezoid body
- Trapezoid bone
- Trapezoid ligament
- Trastuzumab
- Trastuzumab deruxtecan
- Trastuzumab emtansine
- Trauma
- Trauma center
- Trauma focused cognitive behavioral therapy
- Trauma shears
- Trauma team
- Trauma triad of death
- Trauma-informed care
- Traumatic
- Traumatic amputation
- Traumatic asphyxia
- Traumatic bonding
- Traumatic brain injury
- Traumatic cataract
- Traumatic event
- Traumatic grief
- Traumatic memory
- Traumatic neuroma
- Traumatic shock
- Traumatic stress
- Traumatology
- Travel medicine
- Traveler's diarrhea
- Travelers' diarrhea
- Travoprost
- Trazodone
- Treacher Collins syndrome
- Treadmill
- Treadmilling
- Treatment and control groups
- Treatment as Prevention
- Treatment decision support
- Treatment planning
- Treatment-resistant depression
- Tree in bud sign
- Tree nuts
- Tree-in-bud sign
- Trehalase
- Trehalose
- Tremelimumab
- Tremolite
- Tremors
- Trenbolone
- Trenbolone acetate
- Trench foot
- Trendelenburg gait
- Trendelenburg position
- Trendelenburg test
- Trendelenburg's sign
- Treosulfan
- Trepanning
- Trephination
- Trephine
- Treponema
- Treponema denticola
- Treponema pallidum
- Treponema pallidum particle agglutination assay
- Treponema vincentii
- Treponematosis
- Treprostinil
- Tretinoin
- Triacetin
- Triacylglycerol
- Triacylglycerol lipase
- Triage
- Triage tag
- Trial frame
- Trial of labour
- Triamcinolone
- Triamcinolone acetonide
- Triamcinolone diacetate
- Triamcinolone hexacetonide
- Triamterene
- Triangle of auscultation
- Triangles of the neck
- Triangular face
- Triangular fibrocartilage
- Triangular space
- Triatoma
- Triatoma dimidiata
- Triatoma infestans
- Triatominae
- Triazenes
- Triazine
- Triazolam
- Triazole
- Triazolobenzodiazepine
- Tributylamine
- Tributyltin
- Tributyltin chloride
- Tributyltin oxide
- Tributyrin
- Tricaine
- Tricalcium aluminate
- Tricalcium phosphate
- Tricarboxylic acid cycle
- Triceps
- Triceps brachii muscle
- Triceps reflex
- Triceps surae muscle
- Tricetin
- Trichiasis
- Trichilemmal cyst
- Trichilemmoma
- Trichilia
- Trichinella
- Trichinella spiralis
- Trichinosis
- Trichloroacetic acid
- Trichloroethylene
- Trichlorophenol
- Trichobezoar
- Trichoblastoma
- Trichoderma reesei
- Trichodysplasia spinulosa
- Trichoepithelioma
- Trichology
- Trichomegaly
- Trichomonas
- Trichomonas tenax
- Trichomonas vaginalis
- Trichomoniasis
- Trichophagia
- Trichophyton
- Trichophyton interdigitale
- Trichophyton mentagrophytes
- Trichophyton rubrum
- Trichophyton tonsurans
- Trichophyton verrucosum