haruspicy
Divination by use of animal entrails, usually the victims of sacrifice.
countable, uncountable
Different kinds of divination, which have passed for sciences, we have had: […] 6. Haruspicy, by inspecting the bowels of animals. […]
Where it comes from
From Latin haruspicium, from haruspex (“diviner of entrails”) + -ium (forming abstract nouns).
Adapted from the Wiktionary entry haruspicy (CC BY-SA 4.0).