Definition of quinquangular in English:

quinquangular

adjective

  • Having five angles or corners; pentagonal.

Origin

Mid 17th century; earliest use found in William Bedwell (bap. 1563, d. 1632), Arabist and mathematician. From classical Latin quīnque five + angular. Compare post-classical Latin quinquangularis, French quinquangulaire.

Pronunciation

quinquangular

/kwɪnˈkwaŋɡjʊlə/