radiation
English Thesaurus
1. (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance (noun.act)
| hypernym | : | therapy, |
| definition | : | (medicine) the act of caring for someone (as by medication or remedial training etc.) (noun.act) |
| hyponym | : | phototherapy, |
| definition | : | the use of strong light to treat acne or hyperbilirubinemia of the newborn (noun.act) |
| hyponym | : | x-ray therapy, |
| definition | : | the therapeutic use of X rays (noun.act) |
| domain category | : | medical specialty, medicine, |
| definition | : | the branches of medical science that deal with nonsurgical techniques (noun.cognition) |
2. the act of spreading outward from a central source (noun.act)
| hypernym | : | emanation, emission, |
| definition | : | the act of emitting; causing to flow forth (noun.act) |
| hyponym | : | bombardment, |
| definition | : | the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays) (noun.act) |
3. a radial arrangement of nerve fibers connecting different parts of the brain (noun.body)
| hypernym | : | neural structure, |
| definition | : | a structure that is part of the nervous system (noun.body) |
4. the spread of a group of organisms into new habitats (noun.event)
| hypernym | : | spread, spreading, |
| definition | : | process or result of distributing or extending over a wide expanse of space (noun.event) |
| hyponym | : | adaptive radiation, |
| definition | : | the development of many different forms from an originally homogeneous group of organisms as they fill different ecological niches (noun.event) |
5. energy that is radiated or transmitted in the form of rays or waves or particles (noun.phenomenon)
| hypernym | : | energy, free energy, |
| definition | : | (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs (noun.phenomenon) |
| hyponym | : | ionizing radiation, |
| definition | : | high-energy radiation capable of producing ionization in substances through which it passes (noun.phenomenon) |
| hyponym | : | cosmic radiation, |
| definition | : | radiation coming from outside the solar system (noun.phenomenon) |
| hyponym | : | solar radiation, |
| definition | : | radiation from the sun (noun.phenomenon) |
6. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay (noun.process)
| hypernym | : | emission, |
| definition | : | the release of electrons from parent atoms (noun.process) |
| hyponym | : | corpuscular radiation, particulate radiation, |
| definition | : | 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) (noun.phenomenon) |
7. 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 (noun.state)
| hypernym | : | syndrome, |
| definition | : | a pattern of symptoms indicative of some disease (noun.state) |
8. (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance (noun.act)
| derivation | : | radiologist, radiotherapist, |
| definition | : | a medical specialist who uses radioactive substances and X-rays in the treatment of disease (noun.person) |
9. the act of spreading outward from a central source (noun.act)
| derivation | : | radiate, ray, radiate, ray, |
| definition | : | extend or spread outward from a center or focus or inward towards a center (verb.stative) |
10. the spread of a group of organisms into new habitats (noun.event)
| derivation | : | diversify, radiate, |
| definition | : | spread into new habitats and produce variety or variegate (verb.change) |
11. energy that is radiated or transmitted in the form of rays or waves or particles (noun.phenomenon)
| derivation | : | radiate, |
| definition | : | send out rays or waves (verb.weather) |
12. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay (noun.process)
| derivation | : | radioactive, |
| definition | : | exhibiting or caused by radioactivity (adj.all) |
13. (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance (noun.act)
| derivation | : | radiologist, radiotherapist, |
| definition | : | a medical specialist who uses radioactive substances and X-rays in the treatment of disease (noun.person) |
14. the act of spreading outward from a central source (noun.act)
| derivation | : | radiate, ray, radiate, ray, |
| definition | : | extend or spread outward from a center or focus or inward towards a center (verb.stative) |
15. the spread of a group of organisms into new habitats (noun.event)
| derivation | : | diversify, radiate, |
| definition | : | spread into new habitats and produce variety or variegate (verb.change) |
16. energy that is radiated or transmitted in the form of rays or waves or particles (noun.phenomenon)
| derivation | : | radiate, |
| definition | : | send out rays or waves (verb.weather) |
17. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay (noun.process)
| derivation | : | radioactive, |
| definition | : | exhibiting or caused by radioactivity (adj.all) |
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