rectification
process of truncating a polytope by marking the midpoints of all its edges, and cutting off its vertices at those points
en-US/ˌɹɛktəfəˈkeɪʃən/
en-GB/ˌɹɛktɪfɪˈkeɪʃn/
process of truncating a polytope by marking the midpoints of all its edges, and cutting off its vertices at those points