E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
The Libyan Jupiter; so called from the Greek ammos (sand), because his temple was in the desert. Herodotus calls it an Egyptian word (ii. 42).
Son of Jupiter Ammon. Alexander the Great. His father, Philip, claimed to be a descendant of Hercules, and therefore of Jupiter; and the son was saluted by the priests of the Libyan temple as son of Ammon. Hence was he called the son or descendant both of Jupiter and of Ammon.