or Gastromantia, a kind of divination. divination practised among the ancients by means of words coming or seeming to come out of the belly.
The word is Greek, ἀναγκαστική, composed of ἀνάγκη belly, and ἀναγκαστική divination.
There is another kind of divination called by the same name gastromancy, which is performed by means of glasses or other round transparent vessels, within which certain figures appear by magic art. It is thus called, because the figures appear as in the belly of the vessels.