How do you pronounce 'Diocese', and what's the plural? What about diocesan? It's a question many people think but don't always ask! Here we attempt to answer:
Diocese (e.g. The Diocese of Norwich) - di · ah · sis (or di·oh·sis)
Dioceses (e.g. many dioceses in the Church of England) - di · ah · cease (or di·oh·cease)
Diocesan (e.g. The Diocesan Directory) - di · os · e · san (or di·os·a·sun)
If you're interested further or want to find out about the word's origin, why not read John Wells’s phonetic blog from University College London.