Meaning of the word archdiocese in English

What does archdiocese mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

archdiocese

US /ˌɑːrtʃˈdaɪ.ə.sɪs/
UK /ˌɑːtʃˈdaɪ.ə.sɪs/

Noun