You searched for: “onycomancy”
onychomancy, onycomancy (s) (noun) (no pl)
An ancient type of fortune-telling whereby a person’s future is determined by the appearance of the fingernails themselves: Jeanette learned about onychomancy that prophesied the future by interpreting the symbols reflected by sunlight on an individual's fingernails.

This has become an aspect of cheiromancy.

This entry is located in the following units: -mancy, -mancer, -mantic, -mantical (page 11) onych-, onycho-, ony-, -onychia, -onychial, -onychium, -onyx- + (page 4)