WordNet sense 1 (a base found in DNA (but not in RNA) and derived from pyrimidine; pairs with adenine):

thymine

WordNet sense 2 (one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)):

deoxythymidine monophosphate

WordNet sense 3 (a unit of weight equivalent to 1000 kilograms):

MT, tonne, metric ton

WordNet sense 4 (a unit of information equal to a trillion (1,099,511,627,776) bytes or 1024 gigabytes):

terabyte, Tb

WordNet sense 5 (the 20th letter of the Roman alphabet):

letter t

WordNet sense 6 (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):

liothyronine, triiodothyronine

WordNet sense 7 (hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells):

tetraiodothyronine, thyroxin, thyroxine