I. Containing five twelfths of a whole (of a foot, etc.): “quincuncialis magnitudo,” the size of five twelfths of a foot, Plin. 9. 48, 72, § “155: herba,” five twelfths of a foot high, id. 27, 11, 74, § 98.—
II. In partic., planted in the form of a quincunx: “quincuncialis ordinum ratio,” Plin. 17, 11, 15, § 78.