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Webster 1913 Edition

Noun.

[Gr.

ἱερόσ

sacred + [GREEK] divination: cf. F.

hiéromantie

Divination by observing the objects offered in sacrifice.

Noun.

[Gr. sacred, and divination.] Divination by observing the various things offered in sacrifice.

hieromancy ‎(uncountable)

Divination by interpreting sacred objects, often used in sacrificial offerings. Similar to aruspicy.
- 1973 Gibson Complete Illust. Bk Div. & Prophecy
  HIEROMANCY: Divination through various forms of sacrifice, or preparation for such, especially when performed by adepts in accordance with accepted rituals.