radiation

CEFR: C1-C2 /ra-di-a-tion/ [r.ey2.d.iy0.ey1.sh.ah0.n]

Definition: The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionizationExample senences:

Example Sentences:

We now know that invisible forces do control some things: gravity, radiation, electricity. Because it uses sound waves instead of radiation, ultrasound is safer than X-rays