cubo-comb. form

before a vowel sometimes cub- /kjuːb/, combining form from Greek κύβος die, cube n.¹: as in † cubo-cube n. [Greek κυβόκυβος] Obsolete a name for the sixth power of a quantity, or the cube multiplied by itself. Also in Geometry and Crystallography, denoting a solid which combines the forms of a cube and another solid, as cubo-octaˈhedron n. (also cuboctahedron) a solid of fourteen faces formed by cutting off the corners of a cube, so as to add eight triangular faces corresponding to those of an octahedron, or by similarly modifying an octahedron in the direction of a cube; sometimes restricted to the middle or critical case in which the square faces are reduced to smaller squares.