{ Cubic (k?b?k), Cubical (-b?-kal), } a. [L. cubicus, Gr. &unr_;&unr_;&unr_;&unr_;&unr_;: cf. F. cubique. See Cube.] 1. Having the form or properties of a cube; contained, or capable of being contained, in a cube.
[1913 Webster]

2. (Crystallog.) Isometric or monometric; as, cubic cleavage. See Crystallization.
[1913 Webster]

Cubic equation, an equation in which the highest power of the unknown quantity is a cube. -- Cubic foot, a volume equivalent to a cubical solid which measures a foot in each of its dimensions. -- Cubic number, a number produced by multiplying a number into itself, and that product again by the same number. See Cube. -- Cubical parabola (Geom.), two curves of the third degree, one plane, and one on space of three dimensions.
[1913 Webster]