My answers are listed in order of preference.

According to Webster's unabridged dictionary there is no such noun as "orthogon." The adjective "orthogonal" means "1. lying or intersecting at right angles; 2. mutually perpendicular." You would need to add a word like grid, matrix, etc. in English. Frankly, I think it means the same thing as right angle.

151 examples of orthogon:

A polygon with axis-parallel edges is called an orthogon (Figure 1). ... The orthoconvex hull OH(P) of an orthogon P is defined to be the smallest ...
https:/.../ResourceCenter/en/SimulationStandard/showArticle.jsp?year=2000&article=a3&month=dec

Once an Orthogon is formed, several relationships automatically are available to use:. · the square. · the section extending beyond (or within) the square ...
www.timelessbydesign.org/Application.htm

The Golden Section is an Orthogon called the Auron. The golden section can be constructed from a square with a compass and ruler: ...
goldennumber.net/orthogons.htm

Volume Maximization and **Orthoconvex Approximation of Orthogons**
given an orthogon P (i.e., a simple polygon in the plane which is a union of blocks) and a ... In the plane an orthogon is called vertically (horizontally) ...
www.springerlink.com/index/4VAXBAFJ3BWG6LYP.pdf