Meaning Of Tetragonal

a.

Of or pertaining to a tetragon; having four angles or sides; thus, the square, the parallelogram, the rhombus, and the trapezium are tetragonal fingers.

a.

Having four prominent longitudinal angles.

a.

Designating, or belonging to, a certain system of crystallization; dimetric. See Tetragonal system, under Crystallization.