QEDB Share definition Flag An abbreviation for the Latin phrase, "Quad erat demonstrandum, bitch," which means, "That which was to be demonstrated, bitch." Typically written after tedious mathematical proofs. By contradiction, this statement must be true. QEDB. QEDB by QEDB September 3, 2009 0 0 Get merch Get the QEDB mug. Buy Now — $32.95 See more merch
