"protection," 1793, from L. ægis, from Gk. Aigis, the shield of Zeus, said by Herodotus to be related to aix (gen. aigos) "goat," from PIE *aig- "goat" (cf. Skt. ajah, Lith. ozys "he-goat"), as the shield was of goatskin. Athene's aigis was a short goat-skin cloak, covered with scales, set with a gorgon's head, and fringed with snakes.
operating system A Unix variant that was used on Apolloworkstations before Apollo was bought by Hewlett Packard. AEGIS has some advantages over standard BSD or System V Unix. It includes faster file access and a richer command set; there are commands to find out which process is running on a particular node, which process is locking a particular file, etc. (1997-02-25)
programming, tool A CASE tool for project change management written by Peter Miller, with minor contributions by a few others. Aegis is licensed using the GNU GPL but is not a GNU project. Aegis Home (http://aegis.sourceforge.net/). (2005-03-24)