materialize

Universal Words (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]