ir·ra·di·ate /ɪˈreɪdieɪt/ verb [transitiveT] 2. technical if food is irradiated, it is treated with radiation in order to kill bacteria and make it last longer 用放射线照射〔食物以延长贮存时间〕 3. literaryCCBRIGHT to make something look bright as if a light is shining onto it 照耀;使发光 n Grammar Irradiate is usually passive.
—irradiation /ɪˌreɪdiˈeɪʃən/ noun [uncountableU]