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weak interaction


from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A fundamental interaction between elementary particles that is several orders of magnitude weaker than the electromagnetic interaction and is responsible for some particle decay, nuclear beta decay, and neutrino absorption and emission. Also called weak force.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The fundamental interaction responsible for the weak nuclear force.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (physics) an interaction between elementary particles involving neutrinos or antineutrinos that is responsible for certain kinds of radioactive decay; mediated by intermediate vector bosons


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