1. Convention, assembly, conference, convocation name meetings for particular purposes. Convention usually suggests a meeting of delegates representing political, church, social, or fraternal organizations. Assembly usually implies a meeting for a settled or customary purpose, as for discussion, legislation, or participation in a social function. Conference suggests a meeting for consultation and discussion about business or professional problems. Convocation denotes a (church) assembly, the members of which have been summoned for a special purpose; chapel services at some colleges are called convocations. 3. pact, treaty.