- threw
- thrown
- throw
- tissue
- transaminase
- transducing
- transduction
- transfer-proficient
- transferase
- transformism
- transseptal
- treponeme
- trichocyst
- trimerous
- triploblastic
- triploidy
- tropocollagen
- transformist
- trypsin
- trypsinogen
- tubar
- trichidium
- triploid
- trispermous
- trivial
- tropine
- tropomyosin
- tripolar
- trophoblast
- trophozoite
- tryprin
- tryptic
- tube-dwelling
- tyrosine
- umbo
- type
- umbones
- two-chambered
- tyrosinase
- unicellular
- unfertilized
- unsexual
- utricle
- utricular
- vacoular
- vacoulate
- vacoulated
- vacoule
- value
- variation
- variety
- vasomotor
- vegetal
- vegetation
- vegetative
- vestigial
- vestige
- vibratile
- vibrio
- vitellin
- voluntary
- yolk
- zymase