柯林斯詞典free radical (free radicals) 1. N-COUNT Free radicals are atoms that contain one or more unpaired electrons. Free radicals are believed to be a cause of aging, heart disease, and some cancers. 自由基[技術(shù)] [usu pl] 返回 free radical劍橋詞典a molecule that has an extra electron and therefore reacts very easily with other molecules 自由基，遊離基 Free radicals have been implicated in cancer and many other serious diseases . 遊離基是罹患癌癥和許多其他嚴(yán)重疾病的潛在原因之一。 返回 free radical