Tn. hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells ; Tn. 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 ; Tn. the 20th letter of the Roman alphabet ; tn. a unit of weight equivalent to 1000 kilograms ; Tn. one of the four nucleotides used in building DNA ; all four nucleotides have a common phosphate group and a sugar (ribose) ; Tn. a base found in DNA (but not in RNA) and derived from pyrimidine ; pairs with adenine ; T celln. a small lymphocyte developed in the thymus ; it orchestrates the immune system's response to infected or malignant cells ; T hingen. a hinge that looks like the letter T when it is opened ; similar to a strap hinge except that one strap has been replaced by half of a butt hinge that can be mortised flush into the stationary frame ; T lymphocyten. a small lymphocyte developed in the thymus ; it orchestrates the immune system's response to infected or malignant cells ; t'ai chin. a Chinese system of slow meditative physical exercise designed for relaxation and balance and health ; t'ai chi chuann. a Chinese system of slow meditative physical exercise designed for relaxation and balance and health ; T'ien-chingn. a major industrial center in northeastern China on the Grand Canal near the Yellow Sea ; 3rd largest city in China ; T-barn. a surface lift where riders hold a bar and are pulled up the hill on their skis ; T-bar liftn. a surface lift where riders hold a bar and are pulled up the hill on their skis ; T-billn. a short-term obligation that is not interest-bearing (it is purchased at a discount) ; can be traded on a discount basis for 91 days ;
