放射性指示薬

ほうしゃせいしじやく

noun

•

radioactive indicator

放	set free, release, fire, shoot, emit, banish, liberate
射	shoot, shine into, onto, archery
性	sex, gender, nature
指	finger, point to, indicate, put into, play (chess), measure (ruler)
示	show, indicate, point out, express, display
薬	medicine, chemical, enamel, gunpowder, benefit