radiationEnglish → ChineseOxford English–Chineseradiation /BrE reɪdɪˈeɪʃ(ə)n , AmE ˌreɪdiˈeɪʃ(ə)n / noun [uncountable] 1 Physics (of heat) 发热; (of energy) 辐射; (of light) 发光; high solar radiation 强烈的太阳辐射; radiation levels 辐射强度 2 (radioactivity) 放射线; to be exposed to radiation 受放射线照射; a low/high level of radiation 低/高强度辐射