English · Science & Technology
radiation
/ˌreɪ.diˈeɪ.ʃən/
[/ˌreɪ.diˈeɪ.ʃən/]
energy given off as waves
Advancednoun
Definition
Energy that travels in the form of waves or particles, such as heat, light, or nuclear rays.
Example
The thick lead walls protect workers from harmful radiation produced inside the nuclear plant.
The thick lead walls protect workers from harmful radiation produced inside the nuclear plant.
Etymology
From Latin 'radiatio' (a shining), from 'radiare' (to emit rays), from 'radius' (a ray).
How & Where It’s Used
Used in physics, medicine, and discussions of nuclear safety.