Definition of possessioner in English:

possessioner

Pronunciation /pəˈzɛʃ(ə)nə/

noun

historical
  • Specifically. A member of a religious order having temporal possessions or endowments; an endowed clergyman or ecclesiastic.

Origin

Late Middle English (in an earlier sense). Either from Anglo-Norman possessioner possessor, owner, or directly from possession + -er.