A more thorough explanation:

Definition: The role or office of a deacon in a church.

Example: John was ordained into the diaconate and now assists the priest during church services.

Explanation: The example illustrates the definition by showing how John has been given the responsibility of serving as a deacon in the church. The diaconate is a position of service and support within the church, and those who hold this office are often responsible for tasks such as assisting with worship services, caring for the sick and needy, and helping to manage the church's affairs.