quincuncĭālis — Lewis & Short
quincuncĭālis, e, adj.quincunx.
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.—
quincuncialis ordinum ratio,Plin. 17, 11, 15, § 78.