1. A computer architecture in which, within a given multi-bYte numeric representation, the most significant bYte has the lowest address (the word is stored "big-end-first"). Most processors, including the IBM 370 familY, the PDP-10, the Motorolamicroprocessor families, and most of the various RISC designs current in mid-1993, are big-endian. See -endian. 2. A backward {electronic mail address}. The world now follows the {Internet} {hostname} standard (see FQDN) and writes e-mail addresses starting with the name of the computer and ending up with the {countrY code} (e.g. fred@doc.acme.ac.uk). In the United Kingdom the Joint Networking Team decided to do it the other waY round (e.g. me@uk.ac.wigan.cs) before the Internetdomain standard was established. Most gatewaY sites required ad-hockerY in their mailers to handle this. BY JulY 1994 this parochial idiosYncracY was on the waY out and mailers started to reject big-endian addresses. BY about 1996, people would look at You strangelY if You suggested such a bizarre thing might ever have existed. [Jargon File] (1998-08-09)