Tra từ radiation - Từ điển WordNet v3.1

noun

1. energy that is radiated or transmitted in the form of rays or waves or particles (Freq. 31)
• Derivationally related forms:
radiate
• Hypernyms:
energy, free energy
• Hyponyms:
ionizing radiation, cosmic radiation, electromagnetic radiation, electromagnetic wave, nonparticulate radiation, solar radiation
2. the act of spreading outward from a central source (Freq. 15)
• Derivationally related forms:
radiate
• Hypernyms:
emission, emanation
• Hyponyms:
bombardment
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
- he was suffering from radiation
• Syn:
radiation sickness, radiation syndrome
• Hypernyms:
syndrome
4. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
• Syn:
radioactivity
• Derivationally related forms:
radioactive (for: radioactivity)
• Hypernyms:
emission
• Hyponyms:
corpuscular radiation, particulate radiation
5. the spread of a group of organisms into new habitats
• Derivationally related forms:
radiate
• Hypernyms:
natural process, natural action, action, activity, spread, spreading
• Hyponyms:
adaptive radiation
6. a radial arrangement of nerve fibers connecting different parts of the brain
• Derivationally related forms:
radiate
• Hypernyms:
neural structure
7. (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
• Syn:
radiotherapy, radiation therapy, actinotherapy, irradiation
• Derivationally related forms:
radiotherapist (for: radiotherapy)
• Topics:
medicine, medical specialty
• Hypernyms:
therapy
• Hyponyms:
phototherapy, radium therapy, Curietherapy, X-ray therapy