radiation
ra
ˌreɪ
rei
dia
ˈdieɪ
diei
tion
ʃən
shēn
/ɹˌe‍ɪdɪˈe‍ɪʃən/

Definition & Meaning of "radiation"in English

Radiation
01

energy transmitted through space or matter in the form of waves or particles

radiation definition and meaning
Examples
The sun emits radiation that warms the Earth.
02

the act or process of spreading outward from a central point

Examples
Light radiation from the lamp illuminated the entire room.
03

the medical treatment of disease, especially cancer, using controlled exposure to radioactive substances or energy

Examples
She underwent radiation to shrink the tumor.
04

a fan-like arrangement of nerve fibers that connect different regions of the brain

Examples
The corona radiata is a well-known brain radiation.
05

the expansion of a species into new habitats

Examples
The radiation of mammals occurred after the extinction of dinosaurs.
06

the spontaneous emission of particles or electromagnetic rays from radioactive substances

Examples
Uranium undergoes radiation, releasing alpha particles.
07

illness resulting from exposure to ionizing radiation, with symptoms ranging from nausea to death depending on dosage

Examples
Survivors of the nuclear accident suffered from severe radiation.
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