energy that is radiated or transmitted in the form of rays or waves or particles
the act of spreading outward from a central source
syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours;"he was suffering from radiation"
the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
the spread of a group of organisms into new habitats
a radial arrangement of nerve fibers connecting different parts of the brain
(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
中英词源
radiation 放射线，辐射
来自 radiate,放射，辐射。
radiation (n.)
mid-15c., "act or process of radiating," from Middle French radiation and directly from Latin radiationem (nominative radiatio) "a shining, radiation," noun of action from past participle stem of radiare "to beam, shine, gleam; make beaming," from radius "beam of light; spoke of a wheel" (see radius). Meaning "rays or beams emitted" is from 1560s. Meaning "divergence from a center" is 1650s.
词态变化
复数 radiations;
权威造句
1. The radiation can damage microprocessors and computer memories, causing them to malfunction.
辐射会损坏微处理器和电脑内存，使之失灵。
来自柯林斯例句
2. The material can absorb outward-going radiation from the Earth.
该物质可以吸收地球向外辐射的能量。
来自柯林斯例句
3. Possibly we are accustomed, biologically speaking, to this background radiation.
从生物机理上说，我们可能已经习惯了这种本底辐射。
来自柯林斯例句
4. The star grew 30% brighter and threw off huge amounts of radiation.
那颗星的亮度增加了30%并释放出大量辐射。
来自柯林斯例句
5. Their cancers are not so clearly tied to radiation exposure.
