radiation

1. Energy that is radiated or transmitted in the form of rays or waves or particles (synset 111519684)
   is a type of: energy, free energy - (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs
   subtypes:

   • ionizing radiation - high-energy radiation capable of producing ionization in substances through which it passes
   • cosmic radiation - radiation coming from outside the solar system
   • electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
   • solar radiation - radiation from the sun
2. The act of spreading outward from a central source (synset 101255505)
   is a type of: emanation, emission - the act of emitting; causing to flow forth
   subtypes: bombardment - the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays)
3. 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 (synset 114331899)
   "he was suffering from radiation"
   is a type of: syndrome - a pattern of symptoms indicative of some disease
   same as: radiation sickness, radiation syndrome
4. The spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay (synset 113566387)
   is a type of: emission - the release of electrons from parent atoms
   subtypes: corpuscular radiation, particulate radiation - a stream of atomic or subatomic particles that may be charged positively (e.g. alpha particles) or negatively (e.g. beta particles) or not at all (e.g. neutrons)
   same as: radioactivity
5. The spread of a group of organisms into new habitats (synset 107454483)
   is a type of:

   • spread, spreading - process or result of distributing or extending over a wide expanse of space
   • action, activity, natural action, natural process - a process existing in or produced by nature (rather than by the intent of human beings)
   subtypes: adaptive radiation - the development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches
6. A radial arrangement of nerve fibers connecting different parts of the brain (synset 105511206)
   is a type of: neural structure - a structure that is part of the nervous system
7. (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance (synset 100706833)
   referred to in: medical specialty, medicine - the branches of medical science that deal with nonsurgical techniques
   is a type of: therapy - (medicine) the act of caring for someone (as by medication or remedial training etc.)
   subtypes:

   • phototherapy - the use of strong light to treat acne or hyperbilirubinemia of the newborn
   • curietherapy, radium therapy - the use of radium in radiation therapy
   • x-ray therapy - the therapeutic use of X rays
   same as: actinotherapy, irradiation, radiation therapy, radiotherapy

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