noun, plural catholicoses, catholicoi /kəˈθɒlɪˌkɔɪ/ [kuh-thol-i-koi] Show IPA .
1. (often initial capital letter) Eastern Church. a.
any of the heads of certain autocephalous churches.
(in some autocephalous churches) a primate subject to a patriarch and having authority over metropolitans.
(in the early Christian church) the head of monasteries in the same city.
< Late Greek katholikós,
noun use of Greek
adj.; see catholic