Schizophrenia word means

Eugen Bleuler (1911), while renaming dementia praecox as schizophrenia (meaning mental splitting), recognised that this disorder did not always have a poor prognosis as described by Kraepelin. He also recognised that schizophrenia consisted of a group of disorders rather than being a distinct entity. Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no. 54