less common spelling of

  1. 1 :  a shield or breastplate emblematic of majesty that was associated with Zeus and Athena

  2. 2a :  protection <under the aegis of the Constitution>b :  controlling or conditioning (see 2condition 5a) influence <passed new laws under the aegis of national security>

  3. 3a :  auspices, sponsorship <under the aegis of the museum>b :  control or guidance especially by an individual, group, or system <under the aegis of the government>

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