Heliopolis

The name Heliopolis is of ancient Greek origin, Ἡλιούπολις, meaning city of the sun as it was the principal seat of worship of the sun god Ra and the closely related deity Atum. Originally, this ancient city was known by the Egyptians as Iunu, from the transliteration ỉwnw, probably pronounced *Āwanu, and means "(Place of) Pillars". In biblical Hebrew Heliopolis was referred to as, Ôn ( אן ) or Āwen ( און ), Greek: Ὂν. The Egyptian god Atum, was the chief deity of the city Iunu (Heliopolis), who was worshipped in the primary temple, known as Per-Aat (*Par-ʻĀʼat, written pr-t, 'Great House') and Per-Atum (*Par-ʼAtāma, written pr-ỉtmw 'Temple [lit. 'House'] of Atum"'; Hebrew: פתם Pithom). Iunu was also the original source of the worship of the Ennead pantheon. Although in later times, as Horus gained in prominence, worship focused on the syncretic solar deity Ra-harakhty (literally Ra, [who is] Horus of the Two Horizons).