Ambrosia, in Greek mythology, the food of the gods, which was brought to Zeus by pigeons, and which conferred upon the dwellers on Olympus eternal youth and immortality. It supplied the place of all terrestrial comestibles. Favorites of the gods are recorded to have had it given to them as a great favor. It was also used by the gods to anoint their body and hair; hence we read of the ambrosial locks of Zeus.