Hellenic Tradition
Bomos
BOH-mos (Greek βωμός)
The raised Greek altar for ouranic sacrifice — the physical centre of temple and household worship, where offerings were burned and blood poured upward toward the heavenly gods.
Bomos (Greek βωμός, “raised platform” or “altar”) is the raised stone or earth structure at the center of Greek outdoor worship — the ouranic altar where offerings were burned, blood poured upward, and the smoke carried the gods their share. It stands in contrast to the eschara (pit-altar) used for chthonic sacrifice, where offerings go downward into the earth. Together they cover the two registers of Greek sacred space.
The altar at Olympia
Pausanias 5.14.4 describes the great ash altar of Zeus at Olympia: built entirely from the accumulated ash of centuries of thigh-sacrifices, it rose to a considerable height. Priests ascended a ladder to its top to make offerings. This altar had no roofed building over it — Zeus’s altar was open to the sky, appropriate for the father of gods and men who ruled from the highest heaven. It represents the bomos in its most elemental form: an elevated point where earth meets heaven in the smoke.
The bomos in household practice
The household altar — smaller, often just a stone slab or a ceramic stand — served the same function at the domestic level. Hesiod, Works and Days 338–341 instructs that it should be approached with clean hands and a right spirit. The altar was the home’s point of contact with the divine, and keeping it clean, fed with fresh offerings, and ritually maintained was the minimum of household piety.
Homer’s altar scenes
Iliad 1.448–452: Chryses makes his offering to Apollo at the altar — the meal and the thigh-pieces wrapped in fat, the wine poured out. The sequence is exact: prepare, kill, offer the god’s portion (fat and bones in smoke), feast on the rest. This is the ouranic paradigm, with the bomos as its stage.
Related Terms
Eusebeia
The Greek virtue of right reverence — the proper, consistent orientation of respect and honour toward the gods that forms the bedrock of Hellenic piety, distinct from both fear and mere formality.
HellenicLibation
The poured liquid offering of Greek worship — wine, oil, honey, or water given to a deity; the simplest and most universal Hellenic rite, also used to seal oaths and open every meal and feast.
HellenicOuranic / Chthonic
The two registers of Greek worship — ouranic (heavenly Olympians) receiving upward sacrifice and shared feasts, chthonic (underworld powers and dead) receiving downward-poured khoe, blood, and dark animals.
HellenicTemenos
The bounded sacred precinct of Greek religion — the consecrated space 'cut off' from ordinary life surrounding a temple or altar, where the god's presence is concentrated and purity rules apply.