(BrE also materialise) verb [V]
1 (usually used in negative sentences) to take place or start to exist as expected or planned:
The promotion he had been promised failed to materialize.
2 to appear suddenly and/or in a way that cannot be explained:
A tall figure suddenly materialized at her side. * (informal) The train failed to materialize (= it did not come).
materialization, materialisation noun [U]
