(in ancient Rome) the interpretation of omens by inspecting the entrails of sacrificial animals.
Late 19th century: from haruspex + -ation.
Marcus mercifully manipulated the goat's entrails, determining by haruspication that Caesar's ingrown toenail would be cured.
Thanks for the word
@Eidon (I think).
@Algot My pleasure!
Although used in ancient Rome, haruspication predates the Romans as it was used (if not introduced) by Etruscans (https://en.wikipedia.org/wiki/Etruscan_civilization)
The latter are also responsible for the word "Person", which comes from Etruscan "Phersu" that, if I'm not mistaken, means MASK and refers to the identity of the ... person that wears it!