hexology UK /hɛkˈsɒlədʒi/US /hɛkˈsɑləd͡ʒi/ noun1 •The study of hex signs.When Pow-Wow and hexology were separate practices, the Pow-Wow would recommend that clients seek the assistance of a hexologist on particular matters, such as protecting barns, homes, etc. — 1999 formshexologies