Definition of polyhedrical in US English:

polyhedrical

adjective

  • Polyhedral.

Origin

Mid 17th century; earliest use found in Walter Charleton (1620–1707), physician and natural philosopher. Either from Hellenistic Greek πολύεδρος + -ical, or independently from polyhedron + -ical.

Pronunciation

polyhedrical

/ˌpɒlɪˈhiːdrɪkl/