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词根:radi-, -ray-, -rad-, -radio- = ray, beam 光线, 辐射

  来源拉丁语 radix /radius/radiare 光 / 辐射,-ray-,-rad-,-radio- 为 -radi- 的变体。它相应的希腊语词根为: -acti(n)-,-actino- 光,光线,呈放射状的,放射线的。

  (*拉丁文radius (= ray)。——英文字根字典)


同源词:

1. radiant (闪耀的rad(=ray),-i- 连接符(又称为中缀),-ant形容词字尾)
  adj. 容光焕发的;辐射的
  radiate v.放射;散发
  radiation n.放射,散发;放射物
  radiator n.散热器;电炉
  radium n.镭 (-um = 拉丁字尾)
  radioactive adj.放射性的
  You had the most radiant smile as you crossed the finish line.你超过终点线进绽放出了最灿烂的笑容。

2. radar n.雷达,无线电探测器(来源于radio detecting and ranging)
  radar fence /screen 雷达网
  radar homing 雷达导航的
  radar installation 雷达装置
  follow the flight of an aircraft by radar 通过雷达追踪飞机

3. radial adj.光线;半径的;(自行车轮辐条等)放射状的 (能够发射光线的)
  radial tire 子午线轮胎

4. radius n.(圆、球的)半径;半径范围;(活动等的)范围(由中心所发的光能到达的范围)
  every tree within a radius of two miles 周围2英里的所有树木
  radius of action 行动范围

5. radiance;-ancy n.闪烁;发光

6. radio n.无线电报;无线电话;无线电广播;收音机

7. radioactive adj.有辐射能的;放射性的(主动辐射的)《active = 主动的》

8. radioactivity n.放射性;放射现象

9. radiology n.放射学;应用辐射学;放射线科《logy = stydy》

10. radiotelephone n.无线电话(机)《telephone = 电话机》

12. radiotherapy n.X光治疗法;放射线治疗法《therapy = 治疗法》

13. irradiate v.照耀;发出;照射(将光线投射在...上)《ir- = in- = on》

14. irradiation n.发光;光线;照射

15. irradiant adj.发光的;灿烂的

16. irradiance n.发光;光辉;灿烂

词根词缀:electro-, electr-, electri-

【来源及含义】Greek > Latin: electric, electricity; from amber, resembling amber, generated from amber which when rubbed vigorously [as by friction], produced the effect of static electricity

【相关描述】Equipment which we use everyday relies on electronics to function including calculators, car controls, cameras, washing machines, medical scanners, mobile telephones, radar systems, computers; as well as many other applications or devices which are listed in this unit.

【相关词根词缀】 A cross reference of word units that are related, directly and/or indirectly, with "electricity": galvano-; hodo-; ion-; piezo-; -tron; volt; biomechatronics, info; mechatronics, info.

【同源单词】acoustoelectric effect, acoustoelectronics, active electrode, ambulatory electrocardiographic monitoring, amphoteric electrolyte, anelectrotonus