Omphalomancy
It’s a divination form by counting the number of knots in the umbilical cord to predict how many more children the mother will have.
Ophiomancy
It’s a divination form using snake as medium.
Orniscopy/Orinithomancy
It’s a divination form by the study of omens associated with birds, particularly flying birds.
Ovomancy
It’s a divination form by the inspection of egg whites. Also known as Oomantia.
