名词是indication,构成是词根indicat+后缀ion,中文意思是n. 指示,标示象征,暗示,迹象

例如

There had been no indication of either breathlessness or any loss of mental faculties right until his death.直到去世,他既没有出现呼吸困难也没有脑功能丧失的迹象。