Noun
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.
The position of planets when distant from each other five signs, or 150¡.
A quincuncial arrangement, as of the parts of a flower in aestivation. See Quincuncial, 2.
Source: Webster's dictionaryIts existence was foretold at the time of Capt. Weinbaum, though no-one could interpret its messages then (The Quincunx of Time, novella expansion of "Beep"). Source: Internet
Throughout its pages the author attempts to demonstrate that the number five and the related Quincunx pattern can be found throughout the arts, in design, and in nature – particularly botany. Source: Internet