Online Google Dictionary

radiation 中文解釋 wordnet sense Collocation Usage
Noun
/ˌrādēˈāSHən/,
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radiations, plural;
  1. The emission of energy as electromagnetic waves or as moving subatomic particles, esp. high-energy particles that cause ionization

  2. The energy transmitted in this way, as heat, light, electricity, etc

  3. Divergence out from a central point, in particular evolution from an ancestral animal or plant group into a variety of new forms


  1. energy that is radiated or transmitted in the form of rays or waves or particles
  2. the act of spreading outward from a central source
  3. radiation sickness: 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 ...
  4. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
  5. the spread of a group of organisms into new habitats
  6. a radial arrangement of nerve fibers connecting different parts of the brain
  7. In physics, radiation describes a process in which energetic particles or waves travel through a medium or space. There are two distinct types of radiation; ionizing and non-ionizing. The word radiation is commonly used in reference to ionizing radiation only (i.e. ...
  8. Radiation is a 1998 album by Marillion. The only single from this album is "These Chains".
  9. Radiation (BBC Recordings 84–86) is a collection of recordings from Cabaret Voltaire during their most accessible period. They were also made in the BBC's studios with in house producers and engineers rather than the usual self produced material at Western Works studios.
  10. An evolutionary radiation is an increase in taxonomic diversity or morphological disparity, due to adaptive change or the opening of ecospace. ...
  11. Ionizing radiation consists of subatomic particles or electromagnetic waves that are energetic enough to detach electrons from atoms or molecules, thus ionizing them. The occurrence of ionization depends on the energy of the individual particles or waves, and not on their number. ...
  12. Radiation therapy (in North America), or radiotherapy (in the UK and Australia) also called radiation oncology, and sometimes abbreviated to XRT, is the medical use of ionizing radiation as part of cancer treatment to control malignant cells (not to be confused with radiology, the use of ...
  13. The shooting forth of anything from a point or surface, like the diverging rays of light; as, the radiation of heat; The process of radiating waves or particles; The transfer of energy via radiation (as opposed to convection or conduction); Radioactive energy
  14. (Radiational) cooling, enfriamiento por radiación.
  15. Any heated surface loses heat to cooler surrounding space or surfaces through radiation. The earth receives its heat from the sun by radiation. The heat rays are turned into heat as they strike an object which will absorb some or all of the heat transmitted.
  16. Radiation is the transfer of heat or energy from a hot surface to a cold surface through air or through a vacuum.
  17. The transfer of heat in the form of electromagnetic waves from one separate surface to another. Energy from the sun reaches the earth by radiation, and a person's body can lose heat to a cold window or skylight surface in a similar way.
  18. Wave energy transmitted directly from one object to another through the atmosphere or through transparent or translucent materials. The energy radiated is either transmitted, absorbed, reflected or a combination of all three.
  19. Energy released in the form of particles or electromagnetic waves. Common sources of radiation include radon gas, cosmic rays from outer space, and medical x-rays.
  20. Electromagnetic energy: gamma rays, X rays, ultraviolet light, visible light, infrared light, microwaves and radio waves. In mouse genetics, this term generally refers to gamma rays and X rays. ...
  21. The emanations of energy through any being as a result of the flow of the One Life through the etheric body of this being. These emanations increase in potency and quality as that being’s consciousness progressively expands to include more refined and subtle aspects of Divinity. ...
  22. Transfer of energy (heat/sound) from one object to another through an intermediate space. Only the object receiving the radiation, not the space is heated. The heat is in the form of low frequency, infrared, invisible, light energy, transferring from a "warm" object to a "cold" object. ...
  23. Heat flow through space, traveling and acting much like light rays.
  24. An emission, of varying content, from a disturbed atom undergoing internal change. There are two broad classifications: (A) Corpuscular, comprising streams of particles, either neutral or charged, e.g. ...
  25. A general term for the release of energy in a "wave" or "ray" form. All light is radiant energy or radiation, as is heat, UV, microwaves, radio waves, etc.