Definitions

1. noun

The process in which energy is emitted in the form of waves or particles, especially high-energy forms such as X-rays, gamma rays, or cosmic rays.

“The hospital took precautions to minimize the patient’s exposure to radiation from the CT scan.”

2. noun

A person or thing emitting or reflecting radiation, such as the sun or a heated object.

“The radiation from the sun warmed the beach on a summer day.”

3. noun

A disease or injury caused by exposure to radiation, especially ionizing radiation.

“The patient suffered from radiation sickness after the nuclear accident.”

4. verb

To give out or reflect energy in the form of waves or particles, especially high-energy forms such as X-rays, gamma rays, or cosmic rays.

“The radioactive material was said to be emitting radiation into the surrounding air.”

5. verb

To cause or contribute to a disease or injury caused by exposure to radiation, especially ionizing radiation.

“The prolonged exposure to radiation from the nuclear plant caused widespread health problems in the nearby town.”