plural (and now the usual form) of auspice (1530s), "observation of birds for the purpose of taking omens," from French auspice (14c.), from Latin auspicum "divination from the flight of birds; function of an auspex" (q.v.).
The meaning "any indication of the future (especially favorable)" is from 1650s; it is attested earlier (1630s) in extended sense of "benevolent influence of greater power, influence exerted on behalf of someone or something," originally in the expression under the auspices of.
updated on September 30, 2022