the mind > mental capacity > psychology > faculty psychology > psychological study of the skull > [adjective] (6)
pertaining to cranioscopy.
= phrenological, adj.: see craniology, n. 1. Obsolete.
Of, relating to, or connected with phrenology; involving the study of the cranium as an indicator of mental faculties.
Of or relating to the pseudoscientific study of bumps on the skull; phrenological. Cf. bumpology, n.