The Collaborative International Dictionary of English v.0.48:

Ni-resist \Ni-resist\ n.
   Cast iron consisting of graphite in a matrix of austenite.

   Syn: Ni-resist iron.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Ni-resist
    n 1: cast iron consisting of graphite in a matrix of austenite
         [syn: Ni-resist, Ni-resist iron]