1. (noun) 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

• radiation sickness
• radiation syndrome

2. (noun) the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

• radioactivity

3. (noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

• actinotherapy
• irradiation
• radiation therapy
• radiotherapy

1. (noun) energy that is radiated or transmitted in the form of rays or waves or particles

• energy
• free energy

2. (noun) the act of spreading outward from a central source

• emanation
• emission

3. (noun) 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

• syndrome

4. (noun) the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

• emission

5. (noun) the spread of a group of organisms into new habitats

• action
• activity
• natural action
• natural process
• spread
• spreading

6. (noun) a radial arrangement of nerve fibers connecting different parts of the brain

• neural structure

7. (noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

• therapy

1. (noun) energy that is radiated or transmitted in the form of rays or waves or particles

• cosmic radiation
• electromagnetic radiation
• electromagnetic wave
• nonparticulate radiation
• ionizing radiation
• solar radiation

2. (noun) the act of spreading outward from a central source

• bombardment

3. (noun) the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

• corpuscular radiation
• particulate radiation

4. (noun) the spread of a group of organisms into new habitats

• adaptive radiation

5. (noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

• curietherapy
• radium therapy
• phototherapy
• x-ray therapy

1. (noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

• medical specialty
• medicine

1. (noun) energy that is radiated or transmitted in the form of rays or waves or particles

• radiate

2. (noun) the act of spreading outward from a central source

• radiate
• ray

3. (noun) the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

• radioactive

4. (noun) the spread of a group of organisms into new habitats

• diversify
• radiate

5. (noun) a radial arrangement of nerve fibers connecting different parts of the brain

• radiate
• ray

6. (noun) (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

• radiologist
• radiotherapist