ionizing radiation

n.

1.

rays of rapidly moving subatomic particles, x-reys, or gamma rays, sufficiently energetic to cause ionization when absorbed by matter.

Noun

1.

ionizing radiation - high-energy radiation capable of producing ionization in substances through which it passes

alpha radiation, alpha ray, beta radiation, beta ray, cosmic ray, electron radiation, neutron radiation, radiation, roentgen ray, X ray, X-radiation