Definition of Pirandellian in English:
Pirandellian
adjective ˌpɪrənˈdɛlɪənˌpɪr(ə)nˈdɛlɪən
Of, resembling, or characteristic of Pirandello or his plays, especially with reference to the relationship between illusion and reality.
Origin
1920s; earliest use found in The Times. From the name of Luigi Pirandello, Italian playwright + -ian.