tetragon

IPA: tˈɛtrægʌn

(geometry, rare) Quadrilateral.
An aspect of two planets with regard to the Earth when they are distant from each other ninety degrees, or a quarter-circle.

Examples of "tetragon" in Sentences

“A tetragon that acts like an octahedron,” the Doctor said.
Scalene triangle; a quadrangle; quadrilateral or tetragon 59
Page 520 lakes or ponds, vast tetragon terraces, chunk yards*
Pg. 108, tetragon changed to tarragon (16,900 tarragon plants).
Be there or be an equilateral tetragon with four eight-point angles.
A figure that is bounded by four straight lines is termed a quadrangle, quadrilateral or tetragon.
It was long, built around two sections of the tetragon, and with low divans beneath the view windows.
I'm sure she's pulling her gray hair out at missing her chance to baffle both kids and parents with "tetragon", but hey, she could always write a sequel!)
Eight, the number of perfection for every tetragon; four, the number of the Gospels; five, the number of the zones of the world; seven, the number of the gifts of the Holy Ghost.
This was an octagonal construction that from a distance seemed a tetragon (a perfect form, which expresses the sturdiness and impregnability of the City of God), whose southern sides stood on the plateau of the abbey, while the northern ones seemed to grow from the steep side of the mountain, a sheer drop, to which they were bound.