Amun (also spelled Amon, Amoun, Amen, and rarely Imen, Greek Ἄμμων Ammon, and Ἅμμων Hammon, Egyptian Yamanu) was the name of a deity, in Egyptian mythology, who gradually rose to become one of the most important deities in Ancient Egypt, before fading into obscurity.
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[Egyptian] A combination of Amun and Re from later Egyptian mythology, also called Amon-Ra. The Theban god Amun became the national god of Egypt under this name.