(law, international law) An international treaty (full title: Convention for the Unification of Certain Rules Relating to International Carriage by Air, Signed at Warsaw on 12 October 1929) signed in Warsaw in 1929, covering international air travel, including such topics as ticketing, cargo and liability.

(philately, historical) Any of the Indian feudal states which, during the time of the British Empire, used overprinted Indian stamps valid for postage outside the state.

A collection of rules followed by a set of names which allow users to deduce useful information, based on the names' character sequence and knowledge of the rules followed; such as Manhattan's East-West streets being called "Streets" and its North-South streets being called "Avenues".

plural of naming convention

(historical) A constitutional and legislative assembly holding executive power during the French Revolution.

plural of convention centre

plural of convention center

(UK) Alternative form of convention center

(US) A building or group of buildings, consisting of exhibit halls and often auditoriums, used for hosting conventions, exhibitions and other events.

plural of convention-goer