Tantalum is a metal element with the symbol Ta.
Tectonics - Tectonics is the study of rock movements.
Tellurium - Tellurium is a semi-metallic element with the symbol Te.
Tempering - Tempering is the process of heating up steel until red hot and then suddenly cooling it in water. The result is to harden the steel.
Terbium - Terbium is a metal element with the symbol Tb belonging to the series known as rare earths.
Thallium - Thallium is a metal element with the symbol Tl.
Thorium - Thorium is radioactive metal element with the symbol Th.
Thulium - Thulium is a metal element with the symbol Tm.
Tin-plate - Tin-plate is thin sheet iron or steel coated with pure metallic tin. Iron and steel are coated with tin to prevent rusting.
Tincal - Tincal is a crude form of borax found in lake-deposits in parts of Asia.
Tinplate - Tinplate is steel covered in tin.
Ton - The ton is a unit of measurement of the avoirdupois scale equivalent to 20 hundredweight, 2240 pounds or 1.016 tons.
Triassic - The Triassic was the ninth geological period, 170,000,000 years ago.
Tritium - Tritium is an unstable isotope of hydrogen.