Q / quinquangŭlus
adjective

quinquangŭlus

fem. quinquangŭla · neut. quinquangŭlum
quinque-angulus
five-cornered; quinquangular
five-cornered, quinquangular, Prisc. Pond. p. 1358 P.; Boëth. Geom. p. 398, 8 and 10.