I was wrong

Bleuler uses the term group of schizophrenias.

Dementia Praecox oder Gruppe der Schizophrenien is the title of the
book or the paper.

However I'm right about it's meaning. It's not useful to use the
etymological root of what is a neologism. It means a splitting of the
mental faculties as Bleuler saw schizophrenia and was different to
Kraeplin's dementia praecox model. The modern understandings of
schizophrenia have evolved significantly since both of those words.