A more thorough explanation:

A provincial synod is a type of ecclesiastical council that is lawfully assembled to determine church matters. It is composed of clergy from a single province. It is also known as a convocation.

For example, in the Presbyterian church, a provincial synod is a meeting of several adjoining presbyteries. In the Anglican Church, the Church of England, a provincial synod is called a convocation and is composed of clergy from a single province.

These examples illustrate that a provincial synod is a type of synod that is specific to a particular province or region. It is a way for clergy to come together to discuss and make decisions about matters that affect their church and community.