from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The electromagnetic radiation produced by a change in the velocity of an electrically charged subatomic particle, such as an electron, as when it collides with another object.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the electromagnetic radiation produced by the acceleration of a charged particle, such as an electron, when it is deflected by another charged particle, such as an atomic nucleus
German : Bremse, brake (from Middle Low German premse, from pramen, to press) + Strahlung, radiation (from strahlen, to radiate, from Strahl, ray, from Middle High German strāle, from Old High German strāla, arrow, stripe.(American Heritage® Dictionary of the English Language, Fourth Edition)
German Bremse, brake + Strahlung, radiation (Wiktionary)