quadrilateral

QUADRILATERAL

quadrilaterus (Frontin.); quatuor habens latera.

quadrilateral (adj.): quadrĭlătĕrus: a quadrilateral figure, q. forma, Frontin. p. 35, Goes. Subst. a q., quadrangŭlum, Prisc. fig. num. extr.; cf. OBLONG (subs.), PARALLELOGRAM.