Definition of dement in English:

dement

noun

archaic
  • A person suffering from dementia.

    • ‘Nowadays, no sooner is an asylum built than it is filled with maniacs, suicidal melancholics, or senile dements in need of care and treatment.’
    • ‘The Picts, to most people outside Scotland, are a totally mysterious and marginal dement in the ancient population of northern Britain.’

Origin

Late 15th century (as an adjective in the sense ‘demented’): from French dément or Latin demens, dement- ‘insane’. The noun use dates from the late 19th century.

Pronunciation

dement

/dəˈment//dəˈmɛnt/