coadjutor bishop
noun1
Catholicism, Christianity, Roman Catholicism An auxiliary bishop with the right of succession, i.e., he becomes bishop upon the death, removal or retirement of the incumbent bishop.
- The bishop [...] encouraged his flock to bully this brilliant stranger into being ordained priest and soon Augustine was coadjutor (assistant) bishop in the town.2009, Diarmaid MacCulloch, A History of Christianity, Penguin, published 2010, page 304: