thymine, T -- (a base found in DNA (but not in RNA) and derived from pyrimidine; pairs with adenine)
deoxythymidine monophosphate, T -- (one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose))
metric ton, MT, tonne, t -- (a unit of weight equivalent to 1000 kilograms)
triiodothyronine, liothyronine, T -- (thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer)
thyroxine, thyroxin, tetraiodothyronine, T -- (hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells; "thyroxine is 65% iodine")