- thorium
- thiosulphate
- titanic
- titanium
- titre
- titrimetric
- toluene
- transmutation
- trehalose
- triad
- triose
- triptane
- tritium
- trivalent
- treat
- treatment
- try
- tubulated
- tubulure
- tungstate
- triacetate
- triatomic
- tricyclic
- trimer
- trisubstituted
- tryptamine
- tungsten
- tungstic
- turmeric-paper
- ulmin
- unacted
- turnsole
- undercool
- univalent
- unisolated
- unrectified
- unsaturable
- urea
- uric
- uranium
- valence
- valency
- valerianic
- valeric
- vanadate
- vanadium
- vanillin
- volatile
- vitriol
- water-glass
- volatility
- wolfram
- wood alcohol
- wood spirit
- xanthate
- xanthic
- xanthine
- xenon
- ytterbium
- yttrium
- zirconium