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radiation |
1. |
[ noun ] (physics) the physical phenomenon of radiating energy in the form of waves or particles |
Related terms: |
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energy
physical_phenomenon
radioactivity
solar_radiation
corpuscular_radiation
ionizing_radiation
electromagnetic_radiation
beta_radiation
alpha_radiation
cosmic_radiation
neutron_radiation
radiate
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2. |
[ noun ] (physics) the act of spreading outward from a central source |
Related terms: |
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emission
bombardment
radiate
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3. |
[ noun ] (medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance |
Synonyms: |
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radiation_therapy
actinotherapy
irradiation
radiotherapy
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Related terms: |
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therapy
radium_therapy
X-ray_therapy
phototherapy
medicine
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4. |
[ noun ] (anatomy,zoology) a radial arrangement of nerve fibers connecting different parts of the brain |
Related terms: |
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neural_structure
radiate
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5. |
[ noun ] (physics) the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay |
Synonyms: |
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activity
radioactivity
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Related terms: |
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inactivity
act
emission
practice
variation
corpuscular_radiation
space_walk
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6. |
[ noun ] (medicine) 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; severe exposure can cause death within hours |
Synonyms: |
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radiation_syndrome
radiation_sickness
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Related terms: |
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syndrome
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7. |
[ noun ] the spread of a group of organisms into new habitats |
Related terms: |
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natural_process
spread
adaptive_radiation
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Similar spelling: |
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radiating
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