Quin"cunx (?), n. [L., fr.
quinque five + uncia an ounce. The quincunx was marked
by five small spots or balls. See Five, and Ounce the
weight.] 1. 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.
2. (Astrol.) The position of planets
when distant from each other five signs, or 150°.
Hutton.
3. (Bot.) A quincuncial arrangement, as
of the parts of a flower in æstivation. See Quincuncial,
2.