from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The radioactive decay of an atomic nucleus by emission of an alpha particle.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Radioactive decay by emitting an alpha particle.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. radioactive decay of an atomic nucleus that is accompanied by the emission of an alpha particle
Sorry, no etymologies found.
An example of alpha decay is the change of the very radioactive isotope uranium-238 (with 92 protons and 146 neutrons) to thorium-234 (with 90 protons and 144 neutrons).