/ˈreɪdiəʊ ||; ˈredɪˌo/prefix (used in nouns, adjectives and adverbs 用于构成名词、形容词及副词)
1 connected with radio waves or the activity of sending out radio or television programmes (broadcasting) 与无线电波或无线电广播有关的: a radio-controlled car 无线电操纵的汽车
2 connected with RADIOACTIVITY(= powerful and very dangerous rays that are produced when atoms are broken up) 与放射性有关的: radiographer X射线摄影师