from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The quantum theory of the properties and behavior of muons, photons, and electrons and the electromagnetic field.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the study of the interaction of electromagnetic radiation with electrically charged matter within the framework of relativity and quantum mechanics
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a relativistic quantum theory of the electromagnetic interactions of photons and electrons and muons
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