Wiktionary
quadrangulate
vb. To divide a plane (or other surface) into quadrangles, often by removing the dividing line between two adjacent triangles (following a previous triangulation)
Usage examples of "quadrangulate".
The wall that compassed about the Orchyard with a conuenient distance, was bellyed out with columnes of the same matter, and inuested with flowring bindings naturally proportioned, and heere and there were quadrangulate columnes of golde chamfered, arching from one to an other, with a requisite beame Zophor and coronice, with a meete and conuenient proiecture ouer the chapter of glasse vppon the round.