Definities van Oosthoek encyclopedie in de Ensie T
- Thiopheen
- Thiosulfaat
- Thioverbindingen
- Thirty thousand islands
- Thisbe
- Thladiantha
- Thoetmes
- Tholen
- Tholos
- Tholuck
- Thoma (hans)
- Thoma (ludwig)
- Thomas (theodor)
- Thomas (ambroise)
- Thomas (apostel)
- Thomas (frank)
- Thomas (paul louis désiré)
- Thomas a kempis
- Thomas becket
- Thomas dekker
- Thomas van aquino
- Thomas van celano
- Thomas-Christenen
- Thomasin von zerclaere
- Thomasius
- Thomasschule
- Thomassen
- Thomasslakkenmeel
- Thomisten
- Thompson (francis)
- Thomson (james)
- Thomson (james) (B.V.)
- Thomson (joseph john)
- Thomson (joseph)
- Thomson (sir william)
- Thomsonkompas
- Thon
- Thor
- Thora
- Thorarica
- Thorax
- Thorbecke
- Thorgerd holgabrud
- Thorhout
- Thorium
- Thorkelin
- Thorn
- Thorn prikker
- Thoroddsen
- Thorpe
- Thorshavn
- Thoth
- Thousand islands
- Thracië
- Thrasaëtus
- Thrasea paetus
- Thrasybulus
- Thrasyllus
- Thrasymachus
- Threnus
- Thriae
- Thrinax
- Thrips
- Thrombocyten
- Thrombosis
- Thrombus
- Thrudheim
- Thrymr
- Thucydides
- Thugs
- Thuille
- Thulden
- Thule
- Thulium
- Thumelicus
- Thun
- Thunbergia
- Thureau-Dangin
- Thuret
- Thurgau
- Thurii
- Thüringen
- Thüringers
- Thüringerwoud
- Thüringien
- Thusis
- Thusnelda
- Thuya
- Thuyopsis dolabrata
- Thyatira
- Thyestes
- Thylacinus
- Thyllen
- Thymele
- Thymol
- Thymus
- Thymusklier
- Thyreoïdea
- Thysanoptera
- Thysanura
