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adj. Having four sides (as a tetragon); quadrilateral.

adj. Having two equal axes and one unequal, and all angles 90°.

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

adj. Having four prominent longitudinal angles.

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

In geometry, pertaining to a tetragon; having four angles or sides.

In botany and zoology, four-angled; having four longitudinal angles.

Square; quartile.

adj. of or relating to or shaped like a quadrilateral

"Rutile is made up mostly of titanium dioxide with two rarer polymorphs anatase or octahedrite, which is a tetragonal mineral of pseudo-octahedral habit, and brookite, which is an orthorhombic mineral, the Doctor explained to her."

tetragonal spheroid    tetragonal stem    tetragonal system   

crystallization   

octahedral    monoclinic    pentagonal    zwitterionic    icosahedral