1. An arrangement of five objects with four at the corners of a square or rectangle and one in the centre
   "The trees in the orchard were planted in a quincunx pattern for optimal spacing"
    
2. (astrology) an aspect of 150 degrees (5/12 of a circle) between two celestial bodies
   "The quincunx between Mars and Venus in her chart suggested an unusual romantic life"

Derived forms: quincunxes

Encyclopedia: Quincunx