All 3 Uses

radiation
in
The Handmaid's Tale
(Auto-generated)

The air got too full, once, of chemicals, rays, radiation, the water swarmed with toxic molecules, all of that takes years to clean up, and meanwhile they creep into your body, camp out in your fatty cells.†
Chpt 19
I can almost see it, red radiation, wavering upwards like the shimmer above highway tarmac at noon.†
Chpt 30 *
The other Colonies are worse, though, the toxic dumps and the radiation spills.†
Chpt 38

Definitions:

(1) (radiation as in: nuclear radiation)
particles emitted by unstable atomic nuclei

Generally, radiation is discussed in terms of harmful levels of radiation that cause sickness. However, there is a normal level of radiation that is not harmful and sometimes radiation is carefully used for beneficial purposes such as medical treatments that use it to kill cancer cells.
(2) (radiation as in: electromagnetic radiation)
energy sent out as invisible rays such as from heat, light, or radio waves
(3) (meaning too rare to warrant focus)