Wiktionary
n. (context geometry English) A plane or solid figure constructed by joining together identical polygons edge to edge.
Wikipedia
In recreational mathematics, a polyform is a plane figure constructed by joining together identical basic polygons. The basic polygon is often (but not necessarily) a convex plane-filling polygon, such as a square or a triangle. More specific names have been given to polyforms resulting from specific basic polygons, as detailed in the table below. For example, a square basic polygon results in the well-known polyominoes.
Usage examples of "polyform".
A day or two before someone had persuaded him to get a polyforming kit He opened its box and considered starting a copy of Rodin's Kiss, but halted his hand in mid-movement and let the lid fall shut again.
You could have real polyform furniture that changed not only its shape but its texture, like Karatands do, over a range from fur to stainless-steel slickness.
It is aiming at the enemy's heart (or where its heart would be if it had one), and, upon success, all the pieces, the polyforms of pain throughout creation, will be spontaneously relieved.
It is the Empire in its various disguised polyforms which tells us we have sinned.