A stream of high-energy electromagnetic radiation given off by an atomic nucleus undergoing radioactive decay. Because the wavelengths of gamma rays are shorter than those of x-rays, gamma rays have greater energy and penetrating power than x-rays. Gamma rays are emitted by pulsars, quasars, and radio galaxies but cannot penetrate the Earth's atmosphere.
  1. S-ray
  2. high-energy photon
  3. invisible radiation
Electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength
  1. gamma-radiation

Words Related to Gamma-ray

Related words are words that are directly connected to each other through their meaning, even if they are not synonyms or antonyms. This connection may be general or specific, or the words may appear frequently together.

Words near Gamma-ray in the Thesaurus