Cantellation

Cantellation is an operation on polytopes that creates a new facet at every vertex and edge of a polytope by "cutting away" material from the polytope.

Cantellation
Coxeter-Dynkin diagram	...
Prefix	$t_{0,2}$
Minimum rank	3
Conway polyhedron notation	$e$ (explode), $aa$

See also

• Truncation
• Wythoffian operation