APOSTOLIC; APOSTOLICAL a.
he pope or the papacy; papal. Apostolical brief. See under Brief. -- Apostolic canons, a collection of rules and precepts relating to the duty of Christians, and particularly to the ceremonies and discipline of the church in the second and third centuries. -- Apostolic church, the Christian church; -- so called on ac…
APPARATUS n. 2 definitions
Hence: A full collection or set of implements, or utensils, for a given duty, experimental or operative; any complex instrument or appliance, mechanical or chemical, for a specific action or operation; machinery; mechanism.