Radiation

/ˌreɪ.diˈeɪ.ʃən/

Meaning & Definition

noun

The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.

Doctors use radiation to target and destroy cancer cells in patients.

The process of emitting energy in the form of waves or particles.

The radiation from the sun is essential for life on Earth.

The act of radiating or the state of being radiated.

The radiation from the heated metal can cause burns if not handled properly.

A measurable amount of energy emitted by a source, often associated with nuclear reactions.

The nuclear power plant must monitor radiation levels to ensure safety.

From Latin 'radiatio', meaning 'a sending out'.

background radiation

The natural radiation present in the environment.

radiation therapy

A medical treatment using controlled doses of radiation to kill cancer cells.

radiation sickness

An illness caused by excessive exposure to radiation.

radioactivity

The emission of ionizing radiation or particles caused by the spontaneous disintegration of atomic nuclei.

radon

A colorless, odorless gas that can cause harm due to radiation.

Hot stuff

That nuclear reactor is 'hot stuff' in terms of radiation.

Glow

After the radiation treatment, he joked about having a 'radiant glow'.