Definition of portionary in English:

portionary

Pronunciation /ˈpɔːʃ(ə)n(ə)ri/

noun

historical Christian Church
  • Any one of two or more incumbents who shared the duties and revenues of a benefice.

adjective

historical Christian Church
  • Relating to or designating a benefice in which the duties and revenues could be shared among two or more incumbents.

Origin

Mid 16th century; earliest use found in Acts of Parliament. From post-classical Latin portionarius joint holder of a benefice from classical Latin portiōn-, portiō + -ārius.