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A polygon with four sides and four angles; a quadrilateral.

[Late Latin tetragōnum, from Greek tetragōnon, square, from neuter of Greek tetragōnos, having four angles : tetra-, tetra- + -gōnos, angled; see -gon.]

te·trag′o·nal (tĕ-trăg′ə-nəl) adj.
te·trag′o·nal·ly adv.


1. (Chemistry) crystallog Also: dimetric relating or belonging to the crystal system characterized by three mutually perpendicular axes of which only two are equal
2. (Mathematics) of, relating to, or shaped like a quadrilateral
teˈtragonally adv
teˈtragonalness n


Relating to a crystal having three axes, two of which are of the same length and are at right angles to each other. The third axis is perpendicular to these. The mineral zircon has tetragonal crystals. See more at crystal.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.tetragonal - of or relating to or shaped like a quadrilateral
References in periodicals archive ?
The compound crystallizes in the tetragonal crystal system, space group 14/mmm (No.
The compound was found to crystallize in the tetragonal crystal system, space group 14/mmm (No.