ra
dia
tion
1
energy transmitted through space or matter in the form of waves or particles
- The sun emits radiation that warms the Earth.
- Microwaves use radiation to heat food.
- Ultraviolet radiation can damage the skin.
- Radio antennas transmit radiation across long distances.
- The lab measured radiation levels in the room.
2
the act or process of spreading outward from a central point
- Light radiation from the lamp illuminated the entire room.
- Heat radiation from the fire warmed the surrounding area.
- The city experienced radiation of culture as people moved outward.
- Sound radiation from the speaker filled the auditorium.
- Energy radiation from the reactor was carefully monitored.
3
the medical treatment of disease, especially cancer, using controlled exposure to radioactive substances or energy
- She underwent radiation to shrink the tumor.
- Radiation therapy is often combined with chemotherapy.
- Doctors monitored the patient's response to radiation closely.
- Radiation beams targeted only the affected tissue.
- Side effects of radiation can include fatigue and skin irritation.
4
a fan-like arrangement of nerve fibers that connect different regions of the brain
- The corona radiata is a well-known brain radiation.
- MRI scans can show the radiation of white matter fibers.
- Damage to the radiation can affect motor and sensory functions.
- Neurosurgeons must avoid critical brain radiation during surgery.
- The study focused on the radiation connecting the cortex and spinal cord.
5
the expansion of a species into new habitats
- The radiation of mammals occurred after the extinction of dinosaurs.
- Plant radiation into new areas can change the local ecosystem.
- Scientists study adaptive radiation in island species.
- Radiation of finches across the archipelago illustrates evolution in action.
- The radiation of birds into urban areas shows ecological flexibility.
6
the spontaneous emission of particles or electromagnetic rays from radioactive substances
- Uranium undergoes radiation, releasing alpha particles.
- Nuclear decay produces radiation that can be detected with instruments.
- Radiation from radon gas poses health risks in homes.
- Scientists measure radiation to study radioactive isotopes.
- The reactor core emits radiation continuously.
Synonyms:
7
illness resulting from exposure to ionizing radiation, with symptoms ranging from nausea to death depending on dosage
- Survivors of the nuclear accident suffered from severe radiation.
- Radiation can damage bone marrow and weaken the immune system.
- Doctors treated patients for radiation sickness after the accident.
- Symptoms of radiation include vomiting and hair loss.
- High doses of radiation can be fatal within hours.
Synonyms: