2. Separated or distributed by a prism; formed by a prism;
as, prismatic colors.
3. (Crystallog.) Same as {Orthorhombic}.
{Prismatic borax} (Chem.), borax crystallized in the form of
oblique prisms, with ten molecules of water; --
distinguished from octahedral borax.
{Prismatic colors} (Opt.), the seven colors into which light
is resolved when passed through a prism; primary colors.
See {Primary colors}, under {Color}.
{Prismatic compass} (Surv.), a compass having a prism for
viewing a distant object and the compass card at the same
time.
{Prismatic spectrum} (Opt.), the spectrum produced by the
passage of light through a prism.