Acronym	isdid
TOCID symbol	s'ED*
Name	inverted snub dodecadodecahedron, vertisnub dodecadodecahedron, nyarlathotep
VRML	⭳ ©
Vertex figure	[5/3,3,3,5,3]
Colonel of regiment	(is itself not locally convex, but no other uniform polyhedral members)
Face vector	60, 150, 84
Confer	compounds: idisdid
External links

As abstract polytope isdid is isomorphic to siddid, thereby replacing retrrograde pentagrams by prograde ones. – As such isdid is a lieutenant.

Incidence matrix according to Dynkin symbol

s5/3s5s

demi( .   . .  ) | 60 |  1  2  2 |  1  1  3
-----------------+----+----------+---------
      s   . s2*a |  2 | 30  *  * |  0  0  2
sefa( s5/3s .  ) |  2 |  * 60  * |  1  0  1
sefa( .   s5s  ) |  2 |  *  * 60 |  0  1  1
-----------------+----+----------+---------
      s5/3s .    ♦  5 |  0  5  0 | 12  *  *
      .   s5s    ♦  5 |  0  0  5 |  * 12  *
sefa( s5/3s5s  ) |  3 |  1  1  1 |  *  * 60

starting figure: x5/3x5x