radiation
Definitions
Energy that travels as rays, waves, or particles, especially the harmful kind from radioactive material
辐射、放射线（尤指放射性物质发出的有害射线）
The act or process of sending out light or heat from a centre
（光、热的）放射、散发过程
Root Breakdown
Root-derivedradi (ray) + -ation (act/process) = 'the act of sending out rays.' Originally it meant simply the radiating of light or heat. After radioactivity was discovered, it became the everyday name for invisible energy travelling as rays, waves, or particles—nuclear radiation, ultraviolet radiation—but the root picture of rays leaving a source never changed.
Root radi still carries 9 more wordsCommon Collocations
- 1.radiation therapy放射治疗
- 2.radiation exposure辐射暴露
- 3.ultraviolet radiation紫外线辐射
- 4.nuclear radiation核辐射
- 5.radiation levels辐射水平
Example Sentences
- 1.
Doctors used radiation therapy to shrink the tumour before surgery.
- 2.
Sunscreen protects your skin from harmful ultraviolet radiation.
- 3.
Workers near the reactor are monitored for radiation exposure daily.