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thromboplastin a substance found in animal tissue, esp. blood platelets, that assists in blood clotting by converting prothrombin to thrombin.
thrombosis an abnormal clotting of blood in the circulatory system.
thrombus a blood clot that forms within and obstructs a blood vessel or cavity of the heart.
throne the seat occupied by a ruler or high secular or religious official on ceremonial occasions or when holding audience. [2 definitions]
throng a large crowd of people. [5 definitions]
throttle a valve in a machine, esp. an automobile engine, that controls the flow of fuel, air, or the like. [5 definitions]
throttleable combined form of throttle.
through in one side or end and out the other. [17 definitions]
throughout in, to, or during every part of. [3 definitions]
throughway variant of thruway.
throve a past tense of thrive.
throw to send through the air with some force, esp. by a sudden straightening of the arm and wrist; hurl. [14 definitions]
throw a monkey wrench into to disrupt the organization, functioning, or realization of.
throw away to discard as trash or garbage. [2 definitions]
throwaway a freely distributed handbill or leaflet, usu. given out or left in public places. [3 definitions]
throwback an instance of reversion to an earlier stage, form, or the like, esp. in biological evolution. [2 definitions]
throw down the gauntlet to challenge another, esp. to a fight.
throw in the sponge (informal) to admit defeat or inability.
thrown past participle of throw.
throw rug see scatter rug.
throw up to bring up food and liquid from your stomach through your mouth.