Today's Word of the Day means...
thrombosis throm·bo·sis (thrŏm-bō'sĭs)n. pl. throm·bo·ses (-sēz) Formation or presence of a thrombus.
The development of a blood clot in the circulatory system. Depending on the location of the clot, the resultant loss of circulation can lead to a stroke (cerebral thrombosis) or heart attack (coronary thrombosis).