Definition of multiple personality in English:

multiple personality

noun

Psychology
  • [often as modifier] A rare dissociative disorder in which two or more personalities with distinct memories and behavior patterns apparently exist in one individual.

    ‘multiple-personality disorder’
    • ‘For example, a large section on multiple-personality disorder in one episode has been trimmed to make room for a segment on a recent case study of a paranoid schizophrenic.’
    • ‘Determined to prove the stranger is nothing more than a tragic victim of multiple-personality disorder, the doctor soon finds himself doubting his own diagnosis.’
    • ‘He has moved into a spiffy apartment with his fiancée who is a writer, working on a novel whose leading character suffers from multiple-personality disorder.’
    • ‘The quote is about multiple-personality disorder, but I think applies equally well to schizophrenia.’

Pronunciation:

multiple personality

/ˈˌməltəpəl ˌpərsnˈalədē/