/ɪˈreɪdieɪt ||; ɪˈredɪˌet/verb [T] to treat food with powerful(radioactive)rays in order to be able to keep it for a long time 辐照处理（对食物进行辐照以便长久保存）: Irradiated food lasts longer, but some people think it is not safe. 受过辐照处理的食物保存时间较长，但有人认为吃了对身体有害。