Definition of polyhedral in US English:

polyhedral

adjective

Geometry
  • See polyhedron

    • ‘Placental-site trophoblastic tumor is composed predominantly of polyhedral and vacuolated, multinucleated intermediate trophoblastic cells that infiltrate the myometrium with extensive deposition of fibrinoid material.’
    • ‘Microscopically, the lesion consisted of stellate to polyhedral cells distributed singly and arranged in single or multiple layers around small vascular channels and deposited in an abundant myxoid matrix.’
    • ‘And the sphere that houses the new Hayden Planetarium is both beautiful and astrophysically relevant - something that cannot be said of pyramids, cubes, or other polyhedral forms.’
    • ‘The route started by Euler with his polyhedral formula was followed by a little known mathematician Antoine-Jean Lhuilier who worked for most of his life on problems relating to Euler's formula.’
    • ‘The particles may have any shape or size, but they are generally spherical, ellipsoidal, polyhedral, or irregular in shape.’

Pronunciation

polyhedral

/ˌpɑliˈhidrəl//ˌpälēˈhēdrəl/