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[ee-jis] /ˈi dʒɪs/
Classical Mythology. the shield or breastplate of Zeus or Athena, bearing at its center the head of the Gorgon.
protection; support:
under the imperial aegis.
sponsorship; auspices:
a debate under the aegis of the League of Women Voters.
Also, egis.
1695-1705; < Latin < Greek aigís shield of Zeus or Athena, probably from aig- (stem of aíx goat) + -is noun suffix, from a type of shield made of goatskin
3. patronage. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for aegis
  • If you can't avoid them, the most direct form of protection is to put yourself under the aegis of someone the bully does fear.
  • Under her aegis, property taxes have risen steadily.
  • Under the aegis of global warming.
  • There's a huge array of smaller programs underneath Falcon's aegis.
  • Under its aegis, some rather pallid and feeble stuff has crept into the curriculum.
  • There is talk of a small executive body under the aegis of the king.
  • They operate on the streets in almost every state and city in our country and do a lot under the aegis of multiculturalism.
  • Initially a material for daily use, porcelain became an art form under the aegis of imperial households.
  • Aides said he thought it was a breathtaking act of insubordination by a university that was technically under his aegis.
  • The establishments are managed by a quasi-private group under the aegis of the finance ministry itself.
British Dictionary definitions for aegis


sponsorship or protection; auspices (esp in the phrase under the aegis of)
(Greek myth) the shield of Zeus, often represented in art as a goatskin
Word Origin
C18: from Latin, from Greek aigis shield of Zeus, perhaps related to aig-, stem of aix goat
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for aegis

"protection," 1793, from Latin aegis, from Greek Aigis, the name of the shield of Zeus, said by Herodotus to be related to aix (genitive aigos) "goat," from PIE *aig- "goat" (cf. Sanskrit ajah, Lithuanian 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. The exact use and purpose of it is not now clear.

The goatskin would be worn with the two forelegs tied in front of the wearer's breast, or possibly with the head passed through an opening made at the neck, by the removal of the animal's head. [F. Warre Cornish, ed., "Dictionary of Greek and Roman Antiquities," London, 1898]

Online Etymology Dictionary, © 2010 Douglas Harper
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aegis in Technology
operating system
A Unix variant that was used on Apollo workstations 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.
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 (
The Free On-line Dictionary of Computing, © Denis Howe 2010
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The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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