qcd
— Noun
– English
~ a theory of strong interactions between elementary particles (including the interaction that binds protons and neutrons in the nucleus); it assumes that strongly interacting particles (hadrons) are made of quarks and that gluons bind the quarks together
qed
— Noun
– English
~ a relativistic quantum theory of the electromagnetic interactions of photons and electrons and muons
qi
— Noun
– English
~ the circulating life energy that in Chinese philosophy is thought to be inherent in all things; in traditional Chinese medicine the balance of negative and positive forms in the body is believed to be essential for good health