radiation zone definition, radiation zone meaning | English dictionary

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1      (Physics)  
a    the emission or transfer of radiant energy as particles, electromagnetic waves, sound, etc.  
b    the particles, etc., emitted, esp. the particles and gamma rays emitted in nuclear decay  
2      (Also called)    radiation therapy     (Med)   treatment using a radioactive substance  
3      (Anatomy)   a group of nerve fibres that diverge from their common source  
4       See       adaptive radiation  
5    the act, state, or process of radiating or being radiated  
6      (Surveying)   the fixing of points around a central plane table by using an alidade and measuring tape  
  radiational      adj  

adaptive radiation  
      n   the development of many different forms from an originally homogeneous group of animals as a result of the increase of the original stock and its spread and adaptation to different environments. This type of evolution occurred in the Tertiary mammals and the Mesozoic reptiles  
alpha radiation  
      n   alpha particles emitted from a radioactive isotope  
Cherenkov radiation  
      n   the electromagnetic radiation produced when a charged particle moves through a medium at a greater velocity than the velocity of light in that medium  
     (C20: named after P. A. Cherenkov)  
electromagnetic radiation  
      n   radiation consisting of an electric and magnetic field at right angles to each other and to the direction of propagation. It does not require a supporting medium and travels through empty space at 2.9979x108 metres per second  
   See also       photon  
enhanced radiation weapon  
      n      a technical name for       neutron bomb  
gamma radiation  
1    electromagnetic radiation emitted by atomic nuclei; the wavelength is generally in the range 1x10--10 to 2x10--13 metres  
2    electromagnetic radiation of very short wavelength emitted by any source, esp. the portion of the electromagnetic spectrum with a wavelength less than about 1x10--11 metres  
ionizing radiation  
      n   electromagnetic or corpuscular radiation that is able to cause ionization  
radiation belt  
      n   a region in the magnetosphere of a planet in which charged particles are trapped by the planet's magnetic field, an example being the earth's Van Allen belts  
radiation pattern  
      n   the graphic representation of the strength and direction of electromagnetic radiation in the vicinity of a transmitting aerial,   (Also called)    antenna pattern  
radiation pyrometer  
      n      See       pyrometer  
radiation resistance  
      n   the resistive component of the impedance of a radio transmitting aerial that arises from the radiation of power  
radiation sickness  
      n     (Pathol)   illness caused by overexposure of the body or a part of the body to ionizing radiations from radioactive material or X-rays. It is characterized by vomiting, diarrhoea, and in severe cases by sterility and cancer  
synchrotron radiation  
      n   electromagnetic radiation emitted in narrow beams tangential to the orbit of very high energy charged particles, such as electrons, spiralling along the lines of force in a strong magnetic field. It occurs in synchrotron accelerators and in supernova remnants such as the Crab Nebula  
visible radiation  
      n   electromagnetic radiation that causes the sensation of sight; light. It has wavelengths between about 380 and 780 nanometres  
      n      another term for       X-ray  
English Collins Dictionary - English Definition & Thesaurus  
Collaborative Dictionary     English Definition
If something is contaminatedby dirt, chemicals, or radiation, they make it dirty or harmful.
a type of work that goes on 24 hours from 24 hours because the teams performing it are located in various time zones.
E.g: Some claim that follow-the-sun is a business failure. It can be used also as a verb (Our team follows the sun ) or as an adjective (We offer follow-the-sun business support) .
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