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qed
From The Collaborative International Dictionary of English v.0.48:
QED \QED.\ (k[=u]"[=e]*d[=e]"), n. Quantum electrodynamics. [abbrev.] [PJC] Q.E.D .
From The Collaborative International Dictionary of English v.0.48:
QED \Q.E.D\, QED \QED\(k[=u]"[=e]*d[=e]"), interj. [From Latin, quod erat demonstrandum, i.e. which was demonstrated.] Which was demonstrated; -- a phrase used after the conclusion of some line of reasoning, especially in mathematical or logical proofs. [abbrev.] [PJC]
