a blood clot, air bubble, piece of fatty deposit, or other object which has been carried in the bloodstream to lodge in a vessel and cause an embolism 栓子
派生 embolic adjective 语源
mid 17th cent. (denoting something inserted or moving within another, specifically the plunger of a syringe): from Latin, literally piston', from Greek embolos 'peg, stopper'. The current sense dates from the mid 19th cent