The truncated triakis icosahedron, or more precisely an order-10 truncated triakis icosahedron, is a convex polyhedron with 72 faces: 10 sets of 3 pentagons arranged in an icosahedral arrangement, with 12 decagons in the gaps.
It is constructed from a triakis icosahedron by truncating the order-10 vertices.
This creates 12 regular decagon faces, and leaves 60 mirror-symmetric pentagons.
The dual of the truncated triakis icosahedron is called a decakis truncated dodecahedron.
It can be seen as a truncated dodecahedron with decagonal pyramids augmented to the faces.