Rectification (geometry)
In Euclidean geometry, rectification is the process of truncating a polytope by marking the midpoints of all its edges, and cutting off its vertices at those points. The resulting polytope will be bounded by the vertex figures and the rectified facets of the original polytope.
Read more about Rectification (geometry): Example of Rectification As A Final Truncation To An Edge, Higher-order Rectifications, Example of Birectification As A Final Truncation To A Face, In Polygons, In Polyhedra and Plane Tilings, In Polychora and 3d Honeycomb Tessellations, Orders of Rectification