An Etymological Dictionary of Astronomy and Astrophysics

The → electromagnetic radiation emitted by a → fast moving → charged particle
when it passes within the strong → electric field of an → atomic nucleus and is → decelerated.

Etymology (EN): Bremsstrahlung, from Ger. Bremse “brake”

• Strahlung “radiation,” from strahlen “to radiate,” from Strahl “ray,” from
  O.H.G. strala “arrow, stripe;” PIE *ster- “to spread.”

Etymology (PE): Legâm-tâbeš, from legâm, → brake,

• tâbeš, → radiation.