\Cu"bic\ (k?"b?k), Cubical \Cu"bic*al\ (-b?-kal), a. [L.
cubicus, Gr. ?????: cf. F. cubique. See {Cube}.]
1. Having the form or properties of a cube; contained, or
   capable of being contained, in a cube.
2. (Crystallog.) Isometric or monometric; as, cubic cleavage.
   See {Crystallization}.
{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.

\Cu"bic\, n. (Geom.)
A curve of the third degree.
{Circular cubic}. See under {Circular}.