from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A high-speed electron or positron, especially one emitted in radioactive decay.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An energetic electron or positron produced as the result of a nuclear reaction or nuclear decay.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a high-speed electron or positron emitted in the decay of a radioactive isotope
Sorry, no etymologies found.