A more thorough explanation:

A national synod is a type of ecclesiastical council that is lawfully assembled to determine church matters. It is composed of clergy from a single nation.

• A national synod of the Presbyterian Church in the United States of America
• A national synod of the Anglican Church in Canada

These examples illustrate that a national synod is a gathering of clergy from a single nation to discuss and make decisions about church matters. In the Presbyterian Church in the United States of America, a national synod is made up of several adjoining presbyteries. In the Anglican Church in Canada, a national synod is composed of bishops, clergy, and lay representatives from across the country.