Source : Webster's Revised Unabridged Dictionary (1913)

Convocation \Con`vo*ca"tion\, n. [L. convocatio: cf. F.
   convocation. See {Convoke}.]
   1. The act of calling or assembling by summons.

   2. An assembly or meeting.

            In the first day there shall be a holy convocation.
                                                  --Ex. xii. 16.

   3. (Ch. of Eng.) An assembly of the clergy, by their
      representatives, to consult on ecclesiastical affairs.

   Note: In England, the provinces of Canterbury and York have
         each their convocation, but no session for business
         were allowed from 1717 to 1861. The Convocation of
         Canterbury consists of two houses. In the Convocation
         of York the business has been generally conducted in
         one assembly.

   4. (Oxf. University) An academical assembly, in which the
      business of the university is transacted.

   Syn: meeting; assembly; congregation; congress; diet;
        convention; synod; council.

Source : WordNet®

convocation
     n 1: a group gathered in response to a summons
     2: the act of convoking [syn: {calling together}]