방사선이 · 방사선을
radiation, radioactive rays
Example
병원에서는 방사선으로 암을 치료하기도 합니다.
Hospitals sometimes treat cancer with radiation.
Word parts
방 release+사 shoot+선 ray, line
Literally 'rays shot out'.
Good to know
방사선 is the rays themselves; 방사능 is radioactivity, the ability to emit them.
Related words