From Longman Dictionary of Contemporary Englishaegisae‧gis /ˈiːdʒɪs/ noun formal → under the aegis of somebody/something
Examples from the Corpus
aegis• Within it the areas devoted to each will be under the aegis of the respective heads of departments.• Thus the relinquishing of violence can only be achieved as part of work on ourselves under the aegis of Esotericism.• It was agreed that I would go with them under the aegis of Bhopal ji who immediately understood photographic requirements.Origin aegis (1600-1700) Latin “shield of Jupiter, made of goatskin”, from Greek aigis “shield of Zeus”, perhaps from aix “goat” 