A magic square in which the number of letters in the name of each number in the square generates another magic square.

present participle of square-dance

Alternative form of CDO-squared

plural of CDO squared

(nautical) A sailing rig consisting of sails set mainly perpendicular to the line of the keel.

A radially symmetric Latin square.

plural of Parker square

(mathematics) A method of fitting a straight line through a series of points such that the sum of the squares of the residuals is minimized

A puzzle similar to a Rubik's Cube that can change shape due to the way it is cut.

plural of square rig