What is Convocation?

Legal Definition
A convocation (from the Latin convocare meaning "to call/come together", a translation of the Greek ἐκκλησία ekklēsia) is a group of people formally assembled for a special purpose, mostly ecclesiastical or academic.
-- Wikipedia
Legal Definition
Eccles. law. This word literally signifies called together. The assembly of the representatives of the clergy. As to the powers of convocations, see Shelf. on M. & D. 23., See Court of Convocation.
-- Bouviers Law Dictionary
Legal Definition
In ecclesiastical law. The general assembly of the clergy to consult upon ecclesiastical matters.
-- Black's Law Dictionary
Legal Definition
An assembly of the English clergy.
-- Ballentine's Law Dictionary