Definition of quincunx

• n. - An arrangement of things by fives in a square or a rectangle, one being placed at each corner and one in the middle; especially, such an arrangement of trees repeated indefinitely, so as to form a regular group with rows running in various directions.
• n. - The position of planets when distant from each other five signs, or 150¡.
• n. - A quincuncial arrangement, as of the parts of a flower in aestivation. See Quincuncial, 2.