Of an assembly, council, etc.: having all or most of its members present.

Of an assembly, or the place in which it is held: consisting of or having the full number of members; full, complete. Also, of the members of an…

Full or complete in number, size, extent, etc.; esp. (of a council, assembly, etc.) fully attended, in full session.

Of an assembly, conference, etc.: having all members in attendance; fully constituted, fully assembled; esp. attended by all participants, who…